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| Expertizing area | Signature/name | Details (b. born, d. dead, f. founded) |
| Haiti | Windel, Wolfgang | Norderstedt, b. c. 1945, BPP c. 1982– |
| Heligoland | Binner Norden, Erich | Wilhelmshaven 1950, d. 1956 |
| Heligoland | Brettl, Cornelia | Vaterstetten, BPP 2004– |
| Heligoland | Engel, R. F., (also Fa R. F. E.) (Robert) | Hamburg 1897 1943, dealer, father of W. Engel |
| Heligoland | Freudenstein, S. | Frankfurt 1897 |
| Heligoland | Lange, Carl H., 2 | Hamburg 1950 1961, respected dealer |
| Heligoland | Lemaire, Th.(eophile) | Paris 1926, dealer (t.a. Maison Arthur Maury, q.v.), exhibitor |
| Heligoland | Lemberger, Hellmuth (forged), 2 (in script) | Hamburg, BPP 1976 |
| Heligoland | Müller, Hans (Muller, Mueller) | Hannover 1897 |
| Heligoland | Oertel, Dr. | . |
| Heligoland | Oliver, F(rank) H. | London 1926, b. 1867(66?), dealer, BPA expert |
| Heligoland | Pirl, Dr. P. H., 2 (Paul H. Pirl) | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Heligoland | Rinsch, Heinrich | Essen-Stadtwald 1950, 1890–c.1975, BPP 1961, AIEP 1954–75 |
| Heligoland | Ritter, Hermann | Zurich 1949, official expert 1949 |
| Heligoland | Rosenberg, Ad. | Frankfurt 1897 |
| Heligoland | Schuhardt, Hans | Germany (East) 1980 |
| Heligoland | Schulz, Karl-Heinz | Norderstedt, b. 1946, BPP 1996 –2004 |
| Heligoland | Sommer, Dr. Paul (E.) | Limburg 1950 1961, d. 1963, AIEP 1956–63 |
| Heligoland | Sommer, Dr. Erwin | Braunwald (Switzerland), 1912–91, BPP 1958–, AIEP 1978–91, forged, on forged |
| Heligoland | Strachwitz, Graf (Count Otto von S.) | Berlin 1943, dealer (t.a. Philat. Cabinet) |
| Heligoland | Teuber, Wilhelm | Lehrte (Hannover) 1950, b. 1882, UPV |
| Heligoland | Weston, B. | England? |
| Heligoland | Wülbern, Arthur. Advert., 2. | Hamburg 1905, 1869–1926, dealer |
| Honduras | WH (in script) | . |
| Hong Kong | Chan, Dr. Shiu-Hon | Hong Kong 2004 |
| Hong Kong | Hong Kong Stamp Society | Expertizing Service, Glenside PA, USA |
| Hong Kong | Landini, Adriano | Milan, b. 1927, AIEP 1996–2000 |
| Hong Kong | Pearson, Patrick C. (Works as member of committee.) | London, b. 1930, expert 1965–, AIEP 1990–, [FFE1 3 5 6, PE] |
| Hong Kong | Poon, Kam Leung. Photo. (Works as member of committee.) | Hong Kong, b. 1936, expert 1995–, AIEP 2000–, [FFE4, PE] |
| Hungary | Abonyi, Jenö | Budapest 1949, dealer, [Flasch] |
| Hungary | ÁcsJenö (Acs). Note | Dr. Jenö Ács, 1920s, forged, [Flasch] |
| Hungary | Anon | Alias Szabó, on forged, [Flasch] |
| Hungary | Barabassy, Nicolaus | Frechen (DE), BPP 2000– |
| Hungary | Baumgarten, Josef, 2 (cf. [Flasch]), 'JB' (monogram). Note | Vienna 1920s, dealer, also on forged |
| Hungary | Bayer (S. Bayér) | Galatz (Rumania), dealer, [Flasch] |
| Hungary (ragasztó = forged) | BÉVI (in circle) | Budap., expert comm., active, [Flasch 60] |
| Hungary | Biró, Marcel (see the scans) | Debrecen, see [Flasch 63] |
| Hungary | Brevi | [Flasch] |
| Hungary | BSC (in German type) | [Flasch] |
| Hungary | Csaba | On forged [Flasch] |
| Hungary | Csepreghy (= Lajos Csepregi?) | Budapest 1943, dealer, [Flasch] |
| Hungary | dem | [Flasch] |
| Hungary | Dorogi Bp. | Budapest, a collector's mark, [Flasch] |
| Hungary | Doszkár, Emil | Hungary, dealer |
| Hungary | Dy (in circle) | [Flasch] |
| Hungary | EK in circle and downward arrow | [Flasch] |
| Hungary (–1918) | Elbau, Peter. | Fürstenau 2002, SBPV 1993– |
| Hungary | Ernst Belgrade, M. | [Flasch] |
| Hungary | Esser, Dr. | Budapest, dealer, [Flasch] |
| Hungary | Fábián | Also on forged, [Flasch] |
| Hungary | Fekete, Guido | Vienna 1926, dealer |
| Hungary | Fischer Arad | Arad (Hungary), dealer, [Flasch] |
| Hungary | Fischer Wien VII., H. | Vienna, dealer, [Flasch] |
| Hungary | Floderer, István ('FI') | [Flasch] |
| Hungary | FMC | [Flasch] |
| Hungary | Frischer, 2nd vers. | Maybe Norbert Frischer, Vienna 1943 1949, dealer |
| Hungary | Fuchs, R. | . |
| Hungary | GAM | [Flasch] |
| Hungary | GH AD | [Flasch] |
| Hungary | Gilbert (+forged, 2) (in script). Photo. | Dr. Rudolf G., Prague, 1896–1984, expert –1970s, BPP 1961, forged, [Flasch] |
| Hungary | Glatz, István | Hungary, b. 1953, expert 1999–, AIEP 2003–, [FFE7, PE] |
| Hungary | Gráf | [Flasch] |
| Hungary | Györgyik, Sándor, 'GyS' (monogram) | A collector's mark |
| Hungary | Hamis, Hamisitvány | Hungarian for 'Forged', 'Forgery' |
| Hungary | Hannes, Walmath | [Flasch] |
| Hungary | Hauser, Károly G. | Budapest, dealer, [Flasch] |
| Hungary | Herczeg, Kornél | Nyiregyháza, [Flasch] |
| Hungary | Hermann föorvos, Dr. | János H., a collector's mark, [Flasch] |
| Hungary | Hudin, Ivo | [Flasch] |
| Hungary | Hungarofila | Budapest, dealers, [Flasch] |
| Hungary | IRO (in circle) | On genuine, [Flasch] |
| Hungary | Jakots–Sibiiu | Géza Jakots, Sibiu, [Flasch] |
| Hungary | Janisch, Marque Garantie | On genuine stamps, [Flasch] |
| Hungary | Jedlicka, Vincenc ('J' in Courier font) | Prague 1897, dealer, d. 1914. |
| Hungary | Joannovich | [Flasch] |
| Hungary | Kemény, Andor (Kemeny) | Oradea, dealer, [Flasch] |
| Hungary | KFW 54, Garantie | [Flasch] |
| Hungary | Király, Tibor ('K.T.') | [Flasch] |
| Hungary | KJ, Dr | [Flasch] |
| Hungary | Kovács | Also on forged, [Flasch] |
| Hungary | Kralicsek, Béla | Temesvar 1897 |
| Hungary | KS & Co | On forged, [Flasch] |
| Hungary | Kunetz, László | Szabadka, later Vienna, dealer |
| Hungary | Lešetický, Jaroslav ('Lý', forged). Photo | Czechoslovakia, 1866–1936, initiator of the Posta 1919 ovpts, expert c. 1920–, not reliable. [Flasch] |
| Hungary | lest | Also on forged, [Flasch] |
| Hungary | LI | [Flasch] |
| Hungary | LLx (in circle) | [Flasch] |
| Hungary | LM | On genuine, [Flasch] |
| Hungary | M + Sz ('M/cross/Sz') | Hungarian Philatelic Federation, 1926– |
| Hungary | Madarasz, Jules (= Gyula) | Budapest, 1900–81, AIEP 1970–81 |
| Hungary | Maier Berlin, M. Kurt (very small size), 2 | Michael Kurt M., Berlin, 1885–1949, dealer, expert –1931 |
| Hungary | Majs, Sándor | Budapest, dealer, [Flasch] |
| Hungary | Marbach, 2, or 'L. Marbach Wien II' | Leopold (?) M., Vienna, dealer. Note |
| Hungary (on all 16 Nov. 1919 ovpt.s; see cat.s) | Marque Garantie – Soc Mis – | Genuine mark is in same colour as stamp |
| Hungary | MK | [Flasch] |
| Hungary | Monori, Pavel | Czechoslovakia, 1907–85, SCSF expert |
| Hungary | MP (in circle) | On forged only, [Flasch 122] |
| Hungary | NG | Also on forged, [Flasch] |
| Hungary | Nyáry, L. | Budapest pre-WW2, ollector's advert. |
| Hungary | Orbán, Ferenc (Orban) | Silkeborg (Denmark), 1924–98, AIEP 1981–84 |
| Hungary | Pákozdi, László (Pakozdi) | Hungary, [Flasch 166] |
| Hungary | Pape, Heinz. 2. Note (forged) | Used by Géza Tarján, dealer, forger, [Tyler, Flasch 130] |
| Hungary | Pavoille (boxed, three lines: PA VOI LLE), also: Pavoille Paris (two lines) | Emile P., Paris 1926, dealer, also on forged, [Flasch] |
| Hungary (coronation of Charles IV stamps) | PJB (Postás Jóléti Bizottság) | Post Charity Committee; on front of stamp |
| Hungary | Philatelia Subotica, 2 | Szabadka, dealer, on genuine, [Flasch] |
| Hungary | Poula * Paris (in circle) | René Poulain, Paris, b. 1887, dealer. Note |
| Hungary | Prehnalek, Erwin | Also on forged, [Flasch] |
| Hungary | Rafay (in oval, stamped on hinge) | [Flasch] |
| Hungary | Ragasztó | Hungarian for 'forged' |
| Hungary | Reine, G. | Paris, 1920s, dealer, [Flasch] |
| Hungary | Rend, Dr. Ferenc | Budapest, [Flasch 141] |
| Hungary | RF (in circle, with four dots) | On genuine, [Flasch] |
| Hungary | Richter, L. | Budapest 1897 |
| Hungary | Schenk, G(eorg) | On genuine, [Flasch] |
| Hungary | Schröder, Dr. Arthur (boxed) (+forged), also Schroeder | Lippstadt/W. 1950, Mülheim/Ruhr, 1895– 1968, BPP 1958–, AIEP 1954–68, mark in use c. 1930–60 |
| Hungary | Seefeldner, Gustav, Prof. GS + heron, 'SG' (in circle) | Salzburg 1896, Vienna pre-1950, UPV, [Wilhelm van Loo] |
| Hungary (pre-1900) | Sipos, Zsuzsa | Budapest, 1942–2003, expert 1976–2003, AIEP 1991–2003, [FFE3] |
| Hungary (also on forged) | Steiner, Dr. Laszlo | Budapest, 1906–93, AIEP 1967–93, [Flasch] |
| Hungary | Strauch, Jenö | Budapest, dealer, [Flasch] |
| Hungary | Székula, Béla - Luzern, Budapest (Sekula, Szekula) | 3 brothers, Bela Sz. b. 1881, dealers pre-WW2, forgers, [Flasch 153, Tyler] |
| Hungary | Szilágyi, Dr. Paul J. ('Dr. P. Sz.') | USA 1998, collector, [Flasch] |
| Hungary | Szilágyi, Bela (Szilagyi) | Miskolc, Budapest 1949, dealer, [Flasch] |
| Hungary | SZO | [Flasch] |
| Hungary | Tóth Gy(ula) | Debrecen, a collector's mark, [Flasch] |
| Hungary | UJ, Dr (in circle) | [Flasch] |
| Hungary | UL | A reliable mark, [Flasch] |
| Hungary | Vaarnas, Kalle. Photo. (Certif.) | Helsinki, d. 1990, BPP 1961, Finn. Phil. Fed. 1981–90 |
| Hungary | Valódi | Hungarian for 'Genuine', [see Flasch 126] |
| Hungary | Verner, Mirko | Novi Sad 1954, 1915–82, AIEP 1958–80 |
| Hungary | Visnyovszki, Gábor | Budapest, b. 1945, expert 1990–, AIEP 1991–, [FFE3 4, PE] |
| Hungary | Winczer, A... (boxed) | Alex W., Késmárk, [Flasch] |
| Hungary and all areas incl. occupation and local issues | Derecskei, Attila | Budapest, MBSZ and VPEX expert. Note |
| Hungary (first issues) | Zaborsky, Karoly | Budapest, 1922–2000, AIEP 1984–2000 |
| Hungary (air mails) | Markstein, József | Budapest, expert comm. chairm. |
| Hungary (Arad) | Dr. U J (in circle) | Seen on genuine stamps, [Flasch] |
| Hungary (Arad, Szeged) | Unterberg, Jenö | Hungary, [Flasch 158] |
| Hungary (Baranya errors) | Baranya II Tevny. (in metal) | See [Flasch 56], forged in rubber |
| Hungary (Baranya) | Krebs, Arnold | . |
| Hungary (Baranya) | Lengyel | Also on forged, [Flasch] |
| Hungary (Baranya) | Miertl. Note (forgeries) | Gyula (Julius) M., Pécs 1920, dealer, recogn. expert, [see Flasch 119] |
| Hungary (Baranya) | Petric, Nicola | Zagreb |
| Hungary (Baranya) | Walmath, Hennes (?) | On genuine, [Flasch] |
| Hungary (Debrecen etc.) | Bátori (Artur Emil Batori) | Budapest, dealer, a good mark, [Flasch] |
| Hungary (Debrecen) | Juretzky, P. ('FF' monogram) | A forger, [Flasch 172] |
| Hungary (Debrecen) | Kálmán | Dealer, on forged, [Flasch] |
| Hungary (Debrecen) | Kapusi, Géza ('KG' in oval). Note | Debrecen, [Flasch] |
| Hungary (Debrecen) | Lo (in circle) | On genuine, [Flasch] |
| Hungary (Debrecen) | Mayer | Also on forged, [Flasch] |
| Hungary (Debrecen) | Megyeri, Ferenc ('MF' in circle) | Oradea, [Flasch 118] |
| Hungary (Debrecen) | Szabó | On genuine, [Flasch] |
| Hungary (Debrecen) | Szalay, Dr. Béla (=Adalbert) ('Dr. Sz.'). Note (forged) | Sibiu (Hermannstadt) 1935, b. 1869, the foremost expert on these issues, [Flasch] |
| Hungary (Debrecen) | Szav. (Hungarian for 'guaranteed') | On genuine, [Flasch] |
| Hungary (Debrecen, Baranya) | LBS | On genuine, [Flasch] |
| Hungary (Debrecen; on genuine) | Banater Philatelist ('PhB', qv.) | A Temesvár magazine, [Flasch] |
| Hungary (esp. Debrecen I) | Örvös, János ('JÖ' in triangle) | On genuine, [Flasch] |
| Hungary (esp. Debrecen) | Tausig Budapest, E. (Ede/Edmund Tausig). Note (forged) | Budapest, well-known dealer, mark forged twice, [Flasch] |
| Hungary (occ. and local issues) | Bodor, Dr. Mihály | Pécs 2006, [Flasch]. Note |
| Hungary (occ. ovpt.s) | Flasch, Dezsö | Budapest 1998, d. 2006, expert on overprints, [Flasch] |
| Hungary (occ. ovpt.s) | Székely Bpest (in two lines) (Szekely) | Sándor Székely, Budapest 1949, dealer, [Flasch] |
| Hungary (occ. ovpt.s) | Werner, A. Budapest | Sandor (= Alexander) Werner, Budapest 1949, dealer, reliable, [Flasch] |
| Hungary (on forged ovpt) | Perrain, A. R. | France, dealer, [Flasch 137] |
| Hungary (on forged ovpt) | Romeko Paris. Certif. | Dr. Serge Rockling (Rochlin, Rocklin), Paris, 1893–1975, dealer t.a. Maison Romeko 1921–c.65, AIEP 1968–75 |
| Hungary (ovpt) | BBB (in three lines) | On genuine, [Flasch] |
| Hungary (ovpt) | Odor, Johann/Jean (also 'O') | A forger, [Flasch 126] |
| Hungary (ovpt) | PN (in oval) | On forged, [Flasch] |
| Hungary (ovpt) | Walder, Arthur ('AW') (also 'W') | Arad, five diff. marks, [Flasch 160] |
| Hungary (Sopron 1956) | Czencz, Dr. Sándor, 'DrCzS.' | Hungary, [Flasch] |
| Hungary (Sopron 1956) | Majoros, Laszlo | Budapest 2001 |
| Hungary (Sopron 1956) | Mefesz Sopron, cf. MF | Students' league, [Flasch 17, 117] |
| Hungary (Sopron 1956) | MF (in dotted circle), cf. Mefesz | . |
| Hungary (Szeged etc.) | Abraham | [Flasch] |
| Hungary (Szeged etc.) | Lugosi, Döme ('L D') | [Flasch] |
| Hungary (Szeged) | Brooks | . |
| Hungary (Szeged) | Budapester Bg. Börse | [Flasch] |
| Hungary (Szeged) | Lenart | Also on forged, [Flasch] |
| Hungary (Szeged, Debrecen I) | Székely, Mór ('Sz' in circle) | C. 1920, forged, [Flasch 149] |
| Hungary (Western Hungary) | JHW | On genuine, [Flasch] |
| Hungary (Western Hungary) | Konnerth | Not reliable, [Flasch] |
| Hungary (Western Hungary) | Krist, Walter | Budapest, dealer, [Flasch] |
| Hungary (Western Hungary) | Lehnert | Budapest, on genuine, [see Flasch 110] |
| Hungary (Western Hungary) | Oroszi, K. | On genuine, [Flasch] |
| Hungary (Western Hungary) | Pataj Sándor | An owner's mark, [Flasch] |
| Hungary (Western Hungary) | Terray | Béla Terray?, Bratislava, dealer, [Flasch] |
| Hungary (Western Hungary) | Western Hungary, 2 (arms) | [Flasch 33, 169] |
| Hungary (Western Hungary) | Winter-Laczay, György | Northern Army Chief of Staff, [Flasch] |
| Hungary (Western Hungary, Debrecen) | Tiszolczy, Dezsö ('TyD') | Debrecen, a collector, [Flasch] |
| Iceland | Bayer (manuscript) | . |
| Iceland | Beskow, Bernhard | Stockholm, dealer (Frimärkshuset) |
| Iceland | Biesecke, Franz | Berlin 1950, 1888–1966, BPP 1961 |
| Iceland | Bowen | . |
| Iceland | Daebel, Roland | Wensickendorf, b. 1951, BPP 1991 |
| Iceland | Debo, Dr. Arno | Heidelberg, Munich, 1921–2000, BPP 1958–, AIEP 1967–2000 |
| Iceland | Eldrup, Ebbe. Certif. | Rungsted kyst (Denmark) 2001. Note |
| Iceland | Grřnlund, Svend (Gronlund, Groenlund). Certif. Photo | Copenhagen 1969, d. 1970s, also on forged. Note |
| Iceland | Holm, Ch. | [Mi cat.] |
| Iceland (air mails) | Kessler, F. W. | Dealer at least 1950–60s |
| Iceland | Mřller, Carl Aage (Moller, Moeller) | Greve Strand (DK), b. 1956, expert 1986–, AIEP 2000–, BPP 2001, [FFE4 5, PE] |
| Iceland | Müller (Muller, Mueller) | . |
| Iceland | Pelander, Carl E(inar) | New York NY, 1894–1966, dealer. Note |
| Iceland | Ringström, Sigurd (Ringstrom) | Trelleborg (Sweden), 1908–92, philatelist, author |
| Iceland | Smith, Jay | NC USA, dealer, expert under own name 2003–, APS expert |
| Iceland | Svendsen, Lars. Certif. | Virum 1989 2004 |
| Iceland | Thorsteinsson, Sigurdur H. | Iceland, catalogue editor for 40 years |
| Iceland | Wahl, Günter | Dresden, b. 1929, BPP 1991 |
| Iceland | Witschi, Hans | Sumiswald 2001, SBPV until c. 2002 |
| Iceland (pre-1885) | Witt, Helge | Copenhagen, 1917–77, AIEP 1954–77, BPP 1961 |
| Ikaria | Argyropoulos, Alexander G. (A. ΑΡΓΥΡΟΠΟΥΛΟΣ). Photo | Athens 1949, 1883–1962, dealer |
| Ikaria | Drossos, Pandelis J. (ΔΡΟΣΟΣ) | Athens 1949, 1900–1996, dealer 1926 |
| Ikaria | Schmitt, Joh. Ulrich | Diessen a.A. 2003, Munich, b. 1936, expert 1965–, BPP 1968, AIEP 1982–, [FFE5, PE] |
| India | Cooper, Jal (manuscript) | Bombay, famous dealer –1970s |
| India | Haverbeck, H. D. S. | New York, 1913–86, PF |
| India | Jatia, D(eoki) N. | Calcutta, 1930–2000, AIEP 1981–2000 |
| India | Singhee, A(jeet). R. | Hyderabad, Philatelic Congress of India president and expert 2001 |
| India (air mails) | Jain, Pradip | Patna, b. 1953, expert 1995–, AIEP 2002–, [FFE6, PE] |
| India (Azad Hind (1r+2r)) | IHB (or JHB) | Dealer? |
| India (excl. States) | Heddergott, Jochen | Munich, b. 1936, expert 1969–, BPP 1976, AIEP 1987–, [FFE6, PE] |
| India (Jammu & Kashmir) | Hellrigl, Dr. Wolfgang C. | Bozen (Italy), 1941–2010, expert 1975–2010, AIEP 1980–2010, [FFE1 2 3, PE] |
| India (Jammu & Kashmir) | Hellrigl, Oswald | Brixen (Italy), 1906–63, BPP 1961, AIEP 1957–63 |
| India (Kashmir) | Séfi, Alexander J. (Sefi) | London 1926, 1889–1934, dealer, STPA expert. |
| Indian States | Kinns, Dr. Philip | England 2003, Stanley Gibbons Ltd, BPA expert committee |
| Ionian Is. | Argyropoulos, Alexander G. (A. ΑΡΓΥΡΟΠΟΥΛΟΣ). Photo | Athens 1949, 1883–1962, dealer |
| Ionian Is. | Drossos, Pandelis J. (ΔΡΟΣΟΣ) | Athens 1949, 1900–1996, dealer 1926 |
| Ionian Is. | Maus, Julius | Baden-Baden 1935, 1855–1935 |
| Ionian Is. (1859) | Simmermacher, René | Staufen/Brsg. 2003, Freiburg, BPP 1968 |
| Iran (Persia) | Burgdorf, W. | Bremen 1961 |
| Iran (Persia) | Dadkah, Dr. Mohamed | Teheran, 1910–80, AIEP 1970–80. Note |
| Iran (Persia) | Hadi, Mirza ('Mirza-Hadi'). Advert. | Paris 1943, later Monaco, dealer, forger, [Tyler] |
| Iran (Persia –1891) | Heddergott, Jochen | Munich, b. 1936, expert 1969–, BPP 1976, AIEP 1987–, [FFE6, PE] |
| Iran (Persia) | Khorchid, Samad | Teheran, 1920–87, AIEP 1976–83 |
| Iran (Persia) | Migliavacca, Dr. Giorgio. Note | Tortola BVI, auctioneer 1967–, expert 1973– |
| Iran (Persia) | Pirl, Dr. P. H., 2 (Paul H. Pirl) | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Iran (Persia) | Sadri, Mehrdad (or manuscript 'MS'). | Glendora CA (USA) 2001, b. 1952, expert 1979–. Note |
| Iran (Persia) | Schenek, Major Alfred | Graz 1897 |
| Iran (Persia) | Seefeldner, Gustav, Prof. GS + heron, 'SG' (in circle) | Salzburg 1896, Vienna pre-1950, UPV, [Wilhelm van Loo] |
| Iran (Persia) | stork (picture of) | . |
| Iraq | Pearson, Patrick C. (Works as member of committee.) | London, b. 1930, expert 1965–, AIEP 1990–, [FFE1 3 5 6, PE] |
| Ireland | Foley, Joseph E. | Riva MD (USA) 2001 |
| Ireland | Hamilton-Bowen, Roy | Rodgau (Germany), BPP 1996 |
| Ireland | Macdonnell, David | Dublin, b. 1954, expert 1981–, AIEP 2001–, [FFE5 6, PE] |
| Ireland | Pröschold, Horst K. W. (Proschold, Proeschold) | Frankfurt/M., 1922–89, BPP 1976, AIEP 1975–89 |
| Ireland | Richter, Heinzgeorg. Certif. | Wöllstadt (Germany) 1998, independent expert. Note |
| Israel | Burger, Ernst | Cologne-Lindenthal, 1921–83, BPP 1968, AIEP 1978–83 |
| Israel | Burger, Ernst | Cologne-Lindenthal, 1921–83, BPP 1968, AIEP 1978–83 |
| Israel | Caro, Erwin | . |
| Israel | Ising, Wolf | Ellerbek, BPP 1991 |
| Israel | Marco, Martin | Tel Aviv, b. 1911, dealer, expert 1948–, AIEP 1981–, [FFE5] |
| Israel | Müntz, Hans Georg (Muntz, Muentz) | Tel Aviv, 1918–2002, expert 1965–2000, BPP 1978–90, AIEP 1978–2002, [FFE3 4] |
| Israel | Tsachor, Yacov | Tel Aviv, b. 1946, dealer, expert 1984–, AIEP 1993–, [FFE2 3, PE] |
| Italian Somaliland | Ora, F, | ? |
| Italian States | Asinelli, E., Torino, 2 | Turin, dealer |
| Italian States | Asinelli, E., Torino, 2 | Turin, dealer |
| Italian States | Bolaffi, Dr. Dante | Turin, 1908–88, son of Giulio, AIEP 1976–88 |
| Italian States (esp. Sardinia) | Bottacchi, Giacomo F. Certif. | Milan, b. 1962, auction agent, expert 1986–, AIEP 1999–, [FFE3, PE] |
| Italian States (esp. Sardina) | Cardillo, Paolo | Turin 2008, b. 21.2.1966, SPC |
| Italian States | Diena, Dr. Enzo. Certif. Note | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Italian States | Diena, Emilio, 2 | Rome, 1860–1941, expert 1921– (1897?) |
| Italian States | Diena, Mario | Rome, 1891–1971, AIEP 1954–56, son of Emilio |
| Italian States | Fulpius, George(s), Dr. ('G.F.' ?, GF in manuscript) | Geneva 1949, 1886–1955, official expert 1949, AIEP 1954–55 |
| Italian States (at least) | Ribbing, Dag. Certif. | Stockholm 1898–1980, architect |
| Italian States | Seefeldner, Gustav, Prof. GS + heron, 'SG' (in circle) | Salzburg 1896, Vienna pre-1950, UPV, [Wilhelm van Loo] |
| Italian States | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Italian States (Modena, Parma, Toscana) | Vaccari, Paolo | Vignola (Italy) 2001, dealer |
| Italian States (Papal States and Romagna) | Poser, Dr. Richard | Braunschweig, BPP 1961 |
| Italian States (Papal States) | Friebe, Hans | Freiberg 2003, Berlin, BPP 1991 |
| Italian States (Papal States) | Krause, Richard | Germany, b. 1857, expert of 1887 |
| Italian States (Papal States) | Ton, Max | Weimar, 1882?–1951 |
| Italian States (Papal States) | Vespermann, H(ans) Waldemar. Certif. | Hamburg, BPP 1968 |
| Italian States (Sardinia) | Cerruto, Giorgio (manuscript) | Brescia 1988, b. 21.8.1922 |
| Italian States (Sardinia) | Newiger, Dieter | Berlin, b. 1941, BPP 1991 |
| Italian States (Tuscany) | Bargagli-Petrucci, Count Filippo | Firenze, 1926–84, dealer, AIEP 1954–84 |
| Italy (pre-adh.) | Cattani, Adriano | Padova 2005, dealer |
| Italy (pre-adh.) | Vollmeier, Paolo | Castagnola (Switzerland), b. 1929, expert 1974–, AIEP 1979–, [FFE3, PE] |
| Italy | Bettin, L. (or I.) | . |
| Italy | Bianchi, Ennio. Certif. | Milan 2001. Note |
| Italy esp. Italian Social Republic | Bifani, Giorgio. Certif. | Roncadelle Brescia 2009 |
| Italy | Bolaffi, Dr. Giulio (manuscript). Certif. | Turin 1961, 1902–87, son of Alberto sr., AIEP 1954–87 |
| Italy (1862–78) | Bottacchi, Giacomo F. Certif. | Milan, b. 1962, auction agent, expert 1986–, AIEP 1999–, [FFE3, PE] |
| Italy | Boule, Maurice | Monaco 2002, Paris 1999, b. 1943, dealer, expert 1987–, AIEP 2002–, [FFE6, PE] |
| Italy and areas | Caffaz, Egidio Primo. Certif. | Padova 2001, dealer. Note |
| Italy | Carraro, Gianni. Certif. | Milan 2001, dealer. Note |
| Italy and areas | Cerruti, Antonello | Rome 2008, b. 25.1.1952, SPC |
| Italy (Kingdom & Socialist Rep.) | Cerruto, Giorgio (manuscript) | Brescia 1988, b. 21.8.1922 |
| Italy | Gazzi, Luigi | Rovereto TN (Italy) 2001, dealer. Note |
| Italy | Ghiglione, Ezio. EG? | Genoa, 1950–68, dealers f. 1885 |
| Italy | Giordani, Prof. Giancarlo. Certif. | Bologna 1980s |
| Italy | Giusti, Dr. Corrado. Certif., 2 | Grosseto IT 2008, b, 1958, expert 2008– |
| Italy | Grioni, Federico (manuscript) | Milan 1926 1943, dealer. Advert. |
| Italy | Guttman | . |
| Italy and areas | Migliavacca, Dr. Giorgio. Note | Tortola BVI, auctioneer 1967–, expert 1973– |
| Italy and areas | Moscadelli, Franco. Certif. | S. Miniato Basso, expert 84–. Note |
| Italy | Newiger, Dieter | Berlin, b. 1941, BPP 1991 |
| Italy | Pagnoncelli, Ernesto. Certif. | Rome 1970s, dealer |
| Italy | San Giusto, Filatelia. Certif. | Trieste 1956 2002, dealers. Note |
| Italy | Sancin, Danilo. Certif. Note | Trieste 1956, expert. Cf. San Giusto. |
| Italy | Savarese Oliva, Bruno. Certif. | Genoa 2001, dealer. Note |
| Italy (Mi 1–641) | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Italy and areas | Sottoriva, Fabio. Certif. | Rovereto |
| Italy | Strachwitz, Graf (Count Otto von S.) | Berlin 1943, dealer (t.a. Philat. Cabinet) |
| Italy and areas, Europe, etc. | Terrachini, Dr. Virgilio | Genova, b. 1957, expert 1996–. Certif. |
| Italy | Toselli, Casimiro and Roberto | San Remo 2001. Note |
| Italy and areas | Vignati, Serena. Certif. | Expert at Raybaudi's |
| Italy | Wolf, Sigfrido. Certif. | Firenze 1990s, dealer |
| Italy | Vossen, Friedr. Karl (+forged) | Düsseldorf-Oberkassel 1950, 1912–84, BPP 1958–, AIEP 1954–75 |
| Italy | Zanini, Mario. Certif. | Bellinzona-Molinazzo (CH), 1914–81, AIEP 1958–81 |
| Italy (1945–) | Morandi, Dr. Giancarlo | Cremona, BPP 2003 |
| Italy (air mails) | Longhi, Fiorenzo. Note | Belgirate VB (Italy) 2001, b. 1951, dealer, expert 1995–, AIEP 2003–, [FFE7, PE] |
| Italy (Meran) | Rinsch, Heinrich | Essen-Stadtwald 1950, 1890–c.1975, BPP 1961, AIEP 1954–75 |
| Italy (CLN Aosta issue) | Sassone, Dr. Luigi | Milan 1943, dealer |
| Italy and Colonies | Diena, Dr. Enzo. Certif. Note | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Italy and States | Avi, Dr. Helmuth. Certif. | Lugano 2002, SBPV |
| Italy and States | Biondi, Gino. Certif. | Firenze 2001, dealer. Note |
| Italy and States | Bolaffi, Alberto (jr.) | Turin, b. 1936, son of Giulio, dealer, expert 1975–, AIEP 1983–, [FFE5, PF] |
| Italy and States | Bolaffi, Alberto (sr.) | Turin, 1874–1944 |
| Italy and States | Chiavarello, Dr. Giovanni. Certif., 2 | Naples 2001. Note |
| Italy and States | Colla(-Asinelli), Dr. Giorgio. Certif. | Turin, b. 1946, expert 1977–, AIEP 1984–, [FFE1 3 4, PE] |
| Italy and States | Dellavalle, Lorenzo | Turin, b. 1938, expert 1984–, AIEP 1991–, [FFE5, PE] |
| Italy and States | Diena, Alberto. Certif. | Rome 1950, 1894–1977, expert 1941–, AIEP 1954–77, son of Emilio |
| Italy and States | Diena, Raffaele. Certif. | Rome 2000, son of Enzo, expert 1993– trading as Enzo Diena s.n.c. |
| Italy and States | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Italy and States | Fiecchi, Alfredo E(rmo) | Milan 1950, 1900–82, BPP 1961, AIEP 1954–82. Note |
| Italy and States | Mezzadri, R. | Rome, late 19th early 20th, dealer |
| Italy and States | Mondolfo, Renato. Certif. | Trieste 1950, Rome 1961, 1918–92, AIEP 1954–92 |
| Italy and States | Oliva, Guglielmo. Certif. | Genoa 1949 1961, 1900–1969, dealer from 1920s, great expert, AIEP 1954–69 |
| Italy and States | Raybaudi-Massilia, Dr. Luigi | Rome 1943, 1913–2003, dealer, AIEP 1954–2002 |
| Italy and States | Raybaudi-Massilia, Maurizio. Certif | Rome 2002, b. 1937, indep. expert, AIEP 1983–99. Note |
| Italy and States | Risigari, L. | Rudolstadt 1897 |
| Italian Colonies | Avi, Dr. Helmuth. Certif. | Lugano 2002, SBPV |
| Italian Colonies | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Italian occ. Albania | Zanetti, Dr. Fiorenzo | Milano, b. 1953, expert 1989–, AIEP 1998–, [FFE3, PE] |
| Italian occ. Fiumano-Kupa | Dub, Dr. Emil, 2 (beetle, 3 versions), also 'D' for Saar? Also forged. | Oberstein 1950, 1883–1976, expert 1920–, BPP 1958–, AIEP 1954–74. Note |
| Italian occ. Fiumano-Kupa | Oliva, Guglielmo. Certif. | Genoa 1949 1961, 1900–1969, dealer from 1920s, great expert, AIEP 1954–69 |
| Italian occ. Greece | Lamonaca | ? |
| Italian occ. Ljubljana | Schlenger, Karl-Wilhelm | Krefeld, d. 1987, BPP 1980 |
| Italian occ. Yugoslavia | Ercegovic, Velimir; ('V.E' in circle) Certif1, 2 | Zagreb d. c. 1992, BPP 1980, c. 1970–92, [Flasch] |
| Italian occ.s | Diena, Dr. Enzo. Certif. Note | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Italian occ.s | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Italian PO abroad | Diena, Dr. Enzo. Certif. Note | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Italian PO abroad | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Italian PO China | Landini, Adriano | Milan, b. 1927, AIEP 1996–2000 |
| Italian PO Crete | Schmitt, Joh. Ulrich | Diessen a.A. 2003, Munich, b. 1936, expert 1965–, BPP 1968, AIEP 1982–, [FFE5, PE] |
| Italian PO Libya | Zanetti, Dr. Fiorenzo | Milano, b. 1953, expert 1989–, AIEP 1998–, [FFE3, PE] |
| Japan | Bishop, Rex D. | Boonton NJ (USA) 2001 |
| Japan | ECPM | Expert Committee of the Philatelic Museum Foundation, Tokyo Japan. Note |
| Japan | Evans-de Violini, Mrs. Lois M. | Oxnard CA 2002, ISJP expert. Note |
| Japan | Gutmann, C. | Frankfurt 1897 |
| Japan | Ichida, Dr. Soichi | Tokyo, 1910–86, AIEP 1979–86, [APS H. F.] |
| Japan | ISJP (qv. Eichhorn) | International Society for Japanese Philately Inc, USA, expert committee |
| Japan | Krüger, Karl (Kruger, Krueger) | Lübeck-Kücknitz, BPP (1968)–82. Note |
| Japan | Matl, Albert. 2 | Vienna, b. 1924, expert 1963–, BPP 1976, AIEP 1964–, VÖB, [FFE5, PE] |
| Japan | Narita, Hiromu | Japan, ECPM (q.v.) 2001 |
| Japan | Pfenninger, Franz (forged, another forged) | Munich 1950, 1905–86, BPP 1958–, AIEP 1954–86 |
| Japan | Pirl, Dr. P. H., 2 (Paul H. Pirl) | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Japan | Ruggiero, Michael Eugene (Worked as chairman of committee.) | Staten Island NY, 1928–2013, expert 1974–, AIEP 2002–, ISJP, [FFE6, PE] |
| Japan (1871–1912) | Sawa, Mamoru | Tokyo, 1937–2012, PFJ-EC 1970s–, AIEP 2005– |
| Japan | Schenek, Major Alfred | Graz 1897 |
| Japan | Tyler, Varro E(ugene) | West Lafayette (Indiana), 1926–2001, expert 1965–, AIEP 2000–01, [FFE4 5] |
| Japan | Zweiling, Arthur | Bergfelde bei Berlin, 1893–1971, BPP 1961 |
| Japan (excl. occ.s) | Eichhorn, Florian. Note | Wiesbaden, b. 1958, BPP 1983– |
| Japan (excl. occ.s) | Mayer, Max J. | Munich, Obergünzburg, BPP 1977–97 |
| Japan (excl. occ.s) | Newiger, Dieter | Berlin, b. 1941, BPP 1991 |
| Japan (excl. occ.s) | Pape, Herbert | Erfurt, 1921–96, BPP 1991 |
| Japan (marks on forged stamps) | Japan | [Credit: Kr. Wilhelmsen] |
| Japan and areas | Amano, Yasuharu | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Fukui, Kazuo | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Furuya, Yoshikazu | Japan, Secretary ECPM (q.v.) 2001 |
| Japan and areas | Ikeda, Kenzaburo | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Inoue, Kazuyuki | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Ishikawa, Katsumi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Kuwano, Hiroshi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Matsumoto, Jun Ichi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Ohshima, Masaaki | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Suzuki, Yasushi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Tabata, Hiroshi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Tachikawa, Kenkichi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Tsuchiya, Masayoshi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Uemura, Takahashi | Japan, ECPM (q.v.) 2001 |
| Japan and areas | Yamaguchi, Mitsuru | Japan, ECPM (q.v.) 2001 |
| Japan and occ.s | Philatelic Museum | Tokyo 2005, Expert Committee. Note |
| Japanese occ. (all areas) | Rowell, Milo Davis ('MDR') | USA, 1926–92, US Colonel, ISJP, APS |
| Japanese occ. Burma | President | On forged only, [Richard Warren] |
| Japanese occ. Malaya and Burma | Adgey-Edgar, Capt. Walter Herbert | Great Britain, 1887–1977, philatelist. Note. |
| Jordan (Transjordan) | Dorfman, David. Certif. | Chicago Ill. 1979 |
| Jordan (Transjordan) | François | On forged. Jean Louis F., d. 1941 ? |
| Jordan (Transjordan) | Najjar, Abed H. | UK. Bibliographical note |
| Jordan (Transjordan) | Taylor, J. | . |
| Korea (Kingdom/Empire) | BBB (within a triangle) | . |
| Korea | Eichhorn, Florian. Note | Wiesbaden, b. 1958, BPP 1983– |
| Korea | Ruggiero, Michael Eugene (Worked as chairman of committee.) | Staten Island NY, 1928–2013, expert 1974–, AIEP 2002–, ISJP, [FFE6, PE] |
| Korea | Tyler, Varro E(ugene) | West Lafayette (Indiana), 1926–2001, expert 1965–, AIEP 2000–01, [FFE4 5] |
| Korea | Vincke, Frhr. von | Wiesbaden, BPP 1958– |
| Korea | Zweiling, Arthur | Bergfelde bei Berlin, 1893–1971, BPP 1961 |
| Kuwait | Kiddle, Francis E(dgar) | North Fleet (GB), b. 1942, expert 1980–, AIEP 1999–, [FFE3, PE] |
| Latin America | Aguirre, Eduardo (in square) | Mexico DF 1926 1949, dealer, forged |
| Latin America | Anduze, Garanti: P. | Paul Anduze; forged |
| Latin America | Estudio 20 | Committee of Buenos Aires dealers |
| Latin America | Walli, Harry W. ('H.V.') | Helsinki, 1900–1970 |
| Latin America | Hussman Stamp Co, C. E. (or 'C.E.H. CO') | St. Louis Missouri, forged |
| Latin America | Marcel c.at Anvers | Forged, also on forged |
| Latin America | Tzirac., D. | . |
| Latvia | Bungerz, Alexander | Vienna, 1874–1931 |
| Latvia | Eichenthal (low ordinary capital letters). Forged, note | Willem E., Kreuzwertheim a.M 1950, Stockholm 1961, prev. Tallinn, b. 1892, expert until early 1970s |
| Latvia | Gnädig, Otto (= Gnaedig) | Berlin, BPP 1968 |
| Latvia | Hofmann, Harry von. Photo | Hamburg, b. 1931, expert 1982–2001, BPP 1976, AIEP 2000–, [FFE3 4 (p.184) 5 6, PE] |
| Latvia | Krickmeyer, Edgar | Merzen ü. Bramsche 1950 |
| Latvia | Lindberg, George B. Photo | Slite (Sweden), later Stockholm, 1907–96, BPP 1961 |
| Latvia | Rucins, A. G. (Arvid G.). Rucins | Latvia?, active c. 1950–70 |
| Latvia | Schröder, Dr. Arthur (boxed) (+forged), also Schroeder | Lippstadt/W. 1950, Mülheim/Ruhr, 1895– 1968, BPP 1958–, AIEP 1954–68, mark in use c. 1930–60 |
| Latvia | Watzke, Wolfgang | Bonn, BPP 2000– |
| Leeward Is. | Griffiths, John O. | Great Britain, 1923–2001, AIEP 1979–84 |
| Liechtenstein | Hoffner, Johannes | Ziefen CH 2010, BPP 2011–, SBPV |
| Liechtenstein | Kimmel, Kurt E. (forged) | Massagno (CH) 2001, Richterswil (CH), b. 1941, expert 1972–, BPP 1976, AIEP 1991–, SBPV, [FFE3 5, PE] |
| Liechtenstein | Marxer, Peter | Vaduz, SBPV 1988–, BPP 1990– |
| Liechtenstein | Reinhardt, Werner | Chur (CH), BPP 1984. |
| Liechtenstein | SBPV (in French: ASEP). Certif. | Schweizerischer Briefmarkenprüfer-Verband (The Swiss Federation of Phil. Experts), [PE]. Note |
| Liechtenstein | Sieger, Hermann W(alter) | Lorch/Württ. 1950 2003, b. 1928, dealers (Hermann E. Sieger f. 1922), expert 1955–, BPP 1961, AIEP 1956–, [FFE4, PE] |
| Liechtenstein | Stohmann, André; 'Stohm.', 'AS' (device stolen) | Vienna, Berlin 1929 as dealer, VÖB 1935 1950, UPV |
| Liechtenstein | Zeigler, Robert G. | Indianapolis IN 2001 |
| Lithuania | Becker, Ing. Ernst (forged). (Ing. = Engineer) | Anklam 1935, Hamburg 1950, 1894–1971, BPP 1961, AIEP 1954–71 |
| Lithuania | Göldner (not J. Goldner?) | Pre-WW2, collector or dealer |
| Lithuania | Klein, Dr. Udo E. | Wilnsdorf, –2014, BPP 1996–2007 |
| Lithuania | Lindberg, George B. Photo | Slite (Sweden), later Stockholm, 1907–96, BPP 1961 |
| Lithuania | Liubinskas, Juozas | Chicago 1950 |
| Lombardy-Venetia | Ferchenbauer, Ulrich, Dr. Certif. | Vienna, b. 1941, son of Paul, expert 1975–, BPP 1991, AIEP 1996–, VÖB, [FFE5, PE] |
| Lombardy-Venetia | Grioni, Federico (manuscript) | Milan 1926 1943, dealer. Advert. |
| Lombardy-Venetia | Hübner, Gerhard (Hubner, Huebner) | Stuttgart-Bad Cannstatt, d. 1981, BPP 1961 |
| Lombardy-Venetia | Jedlicka, Vincenc ('J' in Courier font) | Prague 1897, dealer, d. 1914. |
| Lombardy-Venetia | Landini, Adriano | Milan, b. 1927, AIEP 1996–2000 |
| Lombardy-Venetia | Matl, Albert. 2 | Vienna, b. 1924, expert 1963–, BPP 1976, AIEP 1964–, VÖB, [FFE5, PE] |
| Lombardy-Venetia | Provera, Pietro (green sprucetree) | Switzerland (ex Italy), collector. Note |
| Lombardy-Venetia | Seitz, Anton | Vienna 1949, 1900–67, dealer, BPP 1961, AIEP 1954–67 |
| Lombardy-Venetia | Wallner, Dr. Ferdinand (forged), usually in handwriting. Photo | Vienna 1943, 1894–1970, dealer, AIEP 1954–, VÖB, AIEP 1954–70, BPP 1961 |
| Lombardy-Venetia | Zenker, Gisbert | Vienna, 1920–87, AIEP 1967–87, BPP 1976 |
| Luxembourg | Beck, Charles | Luxembourg 1950 |
| Luxembourg | Berger, Ant. | Luxemburg 1897 |
| Luxembourg | chicken (picture of) | . |
| Luxembourg | Demuth, René | Bridel (Lux.), b. 1920, expert 1973–99, BPP 1980, AIEP 1973–2003, [FFE4] |
| Luxembourg | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Luxembourg | Freudenstein, S. | Frankfurt 1897 |
| Luxembourg | FSPL (in script) | Fédération des Sociétés Philatéliques du Grand-Duché de Luxembourg |
| Luxembourg | Goebel, R(aymond, Dr.) (manuscript) | Luxembourg, b. 1950, expert 1980–, AIEP 1998–, BPP 2003, [FFE3, PE] |
| Luxembourg | Oliver, F(rank) H. | London 1926, b. 1867(66?), dealer, BPA expert |
| Luxembourg | Pimian, I. V. (?) | . |
| Luxembourg | Vinc..., L. | . |
| Luxembourg | Wolff, Bernhard | Luxembourg 1950 |
| Macau | Chan, Dr. Shiu-Hon | Hong Kong 2004 |
| Macau | Poon, Kam Leung. Photo. (Works as member of committee.) | Hong Kong, b. 1936, expert 1995–, AIEP 2000–, [FFE4, PE] |
| Malaya | Bernichon, Jules, Paris. (Jules Anthoine) | Paris, d. 1911, dealer, mark forged by [Wondelgem] |
| Malaya | Koh, Seow Chuan | Singapore, b. 1939, expert 1970–, AIEP 2002–, FIP President, [FFE6, PE] |
| Malaya | Moritz, Rud. | Frankfurt, dealer |
| Malaya | Norris, Andrew | England 2003, BPA expert committee |
| Malaya (Straits Settlements pre-1900) | Tay, Peng Hian | Singapore, b. 1944, expert 1989–, AIEP 1998–, [FFE4, PE] |
| Malaya (Straits Settlements) | Michalsky | . |
| Malta | Hamilton-Bowen, Roy | Rodgau (Germany), BPP 1996 |
| Malta | Pröschold, Horst K. W. (Proschold, Proeschold) | Frankfurt/M., 1922–89, BPP 1976, AIEP 1975–89 |
| Malta | Richter, Heinzgeorg. Certif. | Wöllstadt (Germany) 1998, independent expert. Note |
| Malta | WOG | . |
| Manchukuo | Adgey-Edgar, Capt. Walter Herbert | Great Britain, 1887–1977, philatelist. Note. |
| Manchukuo | Philatelic Museum | Tokyo 2005, Expert Committee. Note |
| Manchukuo | Vincke, Frhr. von | Wiesbaden, BPP 1958– |
| Mauritius | Gilbert, S. | Note |
| Mauritius | Richter, Heinzgeorg. Certif. | Wöllstadt (Germany) 1998, independent expert. Note |
| Mauritius | Wise, P. (manuscrip) | . |
| Memel | Becker, Ing. Ernst (forged). (Ing. = Engineer) | Anklam 1935, Hamburg 1950, 1894–1971, BPP 1961, AIEP 1954–71 |
| Memel | Erdwien, Volker | Elze, BPP 1996 |
| Memel | Huylmans, Tobias. Certif. | Freiburg 2011, BPP. Note |
| Memel | Klein, Dr. Udo E. | Wilnsdorf, –2014, BPP 1996–2007 |
| Memel | Matheisen, Karl-Heinz | Neuss, BPP 1984 |
| Memel | Petersen, Dr. E. N. (forged) | Neunkirchen-Seelscheid, BPP 1976 |
| Memel | Ritter, Hermann | Zurich 1949, official expert 1949 |
| Memel | Schmutz, Leslaw, 2 | Rzeszów 2000, Polish Fed. |
| Memel | Tober, Hermann | Magdeburg 1935 |
| Memel | Tröndle, Alfred | Donaueschingen 1950 |
| Mexico | Beal, James H. | Ohio, 1922–87, APS |
| Mexico | Jaretzky, Rolf-Dieter | Braunschweig, b. 1935, expert 1994–, AIEP 1997–, [FFE4, PE] |
| Mexico | Lamy, G(eorges) | France, 1894–1972 |
| Mexico (not locals) | Löwenhagen, R. | Germany 1897 |
| Mexico | MEPSI | Mexico Elmhurst Phil. Soc. Int., USA |
| Mexico | Quast, Albert | Hamburg, BPP 1968 |
| Mexico | Rasch | . |
| Mexico | Schäfer, Dr. | Meissen 1897 |
| Mexico (pre-1900) | Schulz, Oscar | Hamburg, BPP 1961 |
| Mexico | Stout, Douglas W. | MEPSI expert committee, q.v. |
| Mexico (1856–67) | Todd, Gregory C. G. | Ireland, b. 1955, dealer, expert 1990–, AIEP 2002–, [FFE6, PE] |
| Middle East | LP above wolf head in square | L. Prudhon, Lyon, 1920s, dealer |
| Middle East | Sadri, Mehrdad (or manuscript 'MS'). | Glendora CA (USA) 2001, b. 1952, expert 1979–. Note |
| Monaco | Boule, Maurice | Monaco 2002, Paris 1999, b. 1943, dealer, expert 1987–, AIEP 2002–, [FFE6, PE] |
| Monaco | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Monaco | Fourcaut, Jean-Claude | Le Vésinet (France) 2002, dealer. Note |
| Monaco | Guiraud-Darmais, Jacques | Mazamet (France), b. 1928 |
| Mongolia | Cronin, Andrew | Toronto, b. 1925, AIEP 2000–, [FFE1 4 (p.174) 5, PE] |
| Mongolia | MHP | . |
| Mongolia (pre-1945) | Orth, Dr. F. Alfred | Bad Hersfeld (Germany), 1925–93, BPP 1980, AIEP 1983–93 |
| Mongolia | Refky, M. A. | Seen exclusively on forgeries. |
| Mongolia | Vincke, Frhr. von | Wiesbaden, BPP 1958– |
| Montenegro | Fleck, Vladimir ('V.F.') | Zagreb, 1885–1969, expert c. 1940–69, AIEP 1958–69 |
| Montenegro | Grobe, Hans; Grobe (forged) | Hannover 1943, 1899–1994, auctioneer, BPP 1958–, AIEP 1954–82 |
| Montenegro | Hartmann, Hugo | Berlin 1920, b. 1858 |
| Montenegro | Schenek, Major Alfred | Graz 1897 |
| Montenegro | Strandell, Nils | Stockholm 1926 1961, 1876–1963. Note |
| Montenegro | Velickovic, Prof. Dr. Jovan ('JV' in circle), 2. Note | Belgrade, 1927–2012, expert 1975–, BPP 1991, AIEP 1994–, VÖB, [FFE2 3 5, PE] |
| Montenegro | Verner, Mirko | Novi Sad 1954, 1915–82, AIEP 1958–80 |
| Morocco | Cuvelier, M. | Paris 1943, dealer |
| Natal | Griffiths, John O. | Great Britain, 1923–2001, AIEP 1979–84 |
| Natal | Wise, P. (manuscrip) | . |
| Nepal | Heddergott, Jochen | Munich, b. 1936, expert 1969–, BPP 1976, AIEP 1987–, [FFE6, PE] |
| Nepal | Hellrigl, Oswald | Brixen (Italy), 1906–63, BPP 1961, AIEP 1957–63 |
| Nepal | Hellrigl, Dr. Wolfgang C. | Bozen (Italy), 1941–2010, expert 1975–2010, AIEP 1980–2010, [FFE1 2 3, PE] |
| Netherlands | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Netherlands | Hammerschmidt, Rudolf | Düsseldorf, BPP 1958– |
| Netherlands | Loo, H. v. d. (Hendrik van der Loo) | The Hague (Rotterdam pre-WW2), dealer –1960s?, [HvdVlist/WvLoo] |
| Netherlands | Louis, Dr. Albert | Hürth, b. 1925, expert 1976–, BPP 1976–, AIEP 1983–, [FFE1 3, PE] |
| Netherlands | Nederl. Bond van Vereen. van Postzegelv. | Amsterdam 1950, (Dutch phil. federation) |
| Netherlands | Poulie, Jan | Amsterdam 1949 1961, Aubonne (Switzerland) 1978, 1907–81, AIEP 1960–81. Note |
| Netherlands | Robert, J. B. | The Hague 1897 |
| Netherlands | Vervalsing | Dutch for 'Forgery' |
| Netherlands | Vleeming, Henk | Enschede (NL), BPP 2003– |
| Netherlands (ovpt stamps only) | Schröder, Dr. Arthur (boxed) (+forged), also Schroeder | Lippstadt/W. 1950, Mülheim/Ruhr, 1895– 1968, BPP 1958–, AIEP 1954–68, mark in use c. 1930–60 |
| Netherlands and Colonies | BKD, Bondskeuringsdienst. Certif. | Dutch Federation's Expertising Service, f. 1922, [PE] |
| Netherlands and Colonies | Boekema, Roelf | The Hague, 1904–97, dealer, BPP 1961 |
| Netherlands and Colonies | Keiser, Gustav; also (earlier) 'K&Z' in oval circle (in red or black) | The Hague, d. c. 1980, dealer, considered to be a highly reliable mark |
| Netherlands and Colonies | Koopman, Herman | Amsterdam, later Kalmthout (Belgium), dealer, d. c. 1987, BPP, AIEP 1968–87, reliable, [Flasch] |
| Netherlands and Colonies | Loo, Pieter F. A. van de. VDLOOBDK (scan credit A. P. Lenos) | B. 1941, BDK Bondskeuringsdienst (Dutch Federation's Expertising Service) 1987–, [FFE2] |
| Netherlands and Colonies | Muis, C. | Expert, d. c. 1990, NVPH/NVRH (Dutch Association of Stamp Dealers) |
| Netherlands and Netherlands Indies (postal markings) | Vlist, Hendrik Willem van der | Assendelft, b. 1936, expert 1970–, AIEP 1998–, [FFE1 3 4, PE] |
| Netherlands Indies | Bessels, Giel J. | Netherlands 2001, BKD expert, [FFE4] |
| Netherlands Indies | Buijs, H. H. | Tegal (Neth. Indies) 1897 |
| Netherlands Indies | Schreuders, Dr. F. | The Hague 1897 |
| Netherlands Indies (pre-1872) | Tay, Peng Hian | Singapore, b. 1944, expert 1989–, AIEP 1998–, [FFE4, PE] |
| New Guinea | Ceremuga, Krzysztof (Chris) | Sydney, b. 1973, expert 1994–, AIEP 2001–, [FFE3, 5, PE] |
| New Zealand | Capill, Colin G. | NZ, RPSNZ Exp. Comm., [FFE1] |
| New Zealand | Gwynn, Dr. Robin David (Works as member of committee.) | Napier (NZ), b. 1942, expert 1991–, AIEP 1998–, [FFE3, PE] |
| New Zealand | Lyman, Robert W. | Irvington NY, b. 1925, expert 1980–99, AIEP 1987–, [FFE4, PE] |
| New Zealand | Odenweller, Robert P. | Barnardsville NJ, b. 1938, expert 1968–, AIEP 1980–, [FFE3, PE] |
| New Zealand | RPS of Victoria. Certif. | Royal Philatelic Society of Victoria, exp. comm. f. 1949, [PE]. Note |
| New Zealand | RPSNZ | Royal Philatelic Society of New Zealand, exp. comm. f. 1952, [PE] |
| Newfoundland (air mails) | Kessler, F. W. | Dealer at least 1950–60s |
| Nicaragua | cogwheel | . |
| Nicaragua | Quast, Albert | Hamburg, BPP 1968 |
| Nicaragua | Schumann, Otto A. | Berlin-Wilmersdorf 1935, b. 1884 |
| Nicaragua | Uebersee Import GmbH Bremen | Bremen. Some kind of advertisement. |
| Non-European (pre-1900) | Engel, Walter, 2 (BPP), (both forged) | Hamburg, 1914–82, BPP 1961, AIEP 1978–82 |
| North Korea | Todd, Gregory C. G. | Ireland, b. 1955, dealer, expert 1990–, AIEP 2002–, [FFE6, PE] |
| Norway | Anderssen, Dr. Justus | Norway 1929, up to 1950s |
| Norway | Aune, Finn | Vollen (Norway), b. 1955, dealer, expert 1989–, AIEP 1997–, [FFE3, PE] |
| Norway | Berntsen, Arnstein | Oslo, d. 1980? |
| Norway | Biesecke, Franz | Berlin 1950, 1888–1966, BPP 1961 |
| Norway | Brudeseth, Ĺge | Norway 1999 |
| Norway | Dempwolff, Bernhard | Mainz-Hechtsheim, BPP 1968 |
| Norway | Droese, Bernhard ('B. Droese') | Plön/Holstein 1950, Düsseldorf 1961, Bad Salzuflen 1968, BPP 1958– |
| Norway (excl. locals) | Enger, Hans (Johan) | Biri (Norway), b. 1944, dealer, expert 1991–, AIEP 1998–, BPP 1995–, [FFE5, PE] |
| Norway | Flatheim, Geir O. | Kristiansand S, expert 2002–. Note |
| Norway | Hedin, Ernst | Stockholm 1897 |
| Norway | Irmann-Jacobsen, Hans | Norway |
| Norway | Kaiser, Slavomir | Denmark 1982, 1960s |
| Norway | Lundström, Einar. Photo | Stockholm, 1910–94, dealer (Frimärkshuset), AIEP 1970–94 |
| Norway (excl. locals) | Moldenhauer jr, Frantz C. | Minde (Norway), 1920–1999, dealer, expert c. 1965–90, AIEP 1970–99, BPP 1980 |
| Norway | Oslo Filatelist Klub (OFK) | Oslo 1950 |
| Norway | Smith, Jay | NC USA, dealer, expert under own name 2003–, APS expert |
| Norway | Witschi, Hans | Sumiswald 2001, SBPV until c. 2002 |
| Norway | Zenker, Gottwin (forged) | Vienna 2004, b. 1922, BPP 1976, VÖB |
| Norway (local posts) | Schöyen, Björn A. (Schoyen) | Norway, b. 1962, expert, [FFE4] |
| Orange Free State | Schreuders, Dr. F. | The Hague 1897 |
| Pakistan (ovpt on India) | Doubleday, Ron | Great Britain 2004 |
| Pakistan (ovpt on India) | Martin, Col. D. R. (manuscript) | Great Britain |
| Palestine | Hoexter, Dr. Werner | Haifa, 1907–75, BPP 1961, AIEP 1960–75 |
| Palestine | Hoexter, Dr. Werner | Haifa, 1907–75, BPP 1961, AIEP 1960–75 |
| Palestine | Lindenberg, Paul P. | Berlin 1935, b. 1894 |
| Palestine | Müntz, Hans Georg (Muntz, Muentz) | Tel Aviv, 1918–2002, expert 1965–2000, BPP 1978–90, AIEP 1978–2002, [FFE3 4] |
| Palestine | Ray, Samuel | Chicago, 1912–92, AIEP 1969–92 |
| Palestine | Tsachor, Yacov | Tel Aviv, b. 1946, dealer, expert 1984–, AIEP 1993–, [FFE2 3, PE] |
| Panama Canal Zone | Charlat, L. W. | . |
| Papua | Ceremuga, Krzysztof (Chris) | Sydney, b. 1973, expert 1994–, AIEP 2001–, [FFE3, 5, PE] |
| Peru | Darteyre | Maybe Didier Darteyre, France |
| Peru | Rommel, Dr. O. | Leipzig 1897 |
| Peru | Salvatteci, Aldo | Peru, b. 1950, AIEP 2003–, [FFE7, PE] |
| Philippines | Koh, Seow Chuan | Singapore, b. 1939, expert 1970–, AIEP 2002–, FIP President, [FFE6, PE] |
| Poland | Adamczyk, Janusz | Kraków 2000, Polish Fed. |
| Poland | Becker, G. ('G. Becker–Echt') | Poland pre-WW2, dealer. Mostly on forged [Stallberg] |
| Poland | Berbeka, Janusz | Poznan 2000, Polish Fed. |
| Poland | Bialek, Henryk | Warsaw 2000, Polish Fed. |
| Poland | Bulat, H. (in Cyrillic script; also in Latin script), Bulat BPP | John Bulat, Yonkers NY, d. 1999, BPP 1976 |
| Poland | Falkowski, Józef | Warsaw 2000, Polish Fed. |
| Poland | Goy, Erich | Berlin 1944 |
| Poland | Gryzewski, Tadeusz | Warsaw 1950, Lodz, 1904–76, AIEP 1961–76 |
| Poland | Haertel, M., Geprüft (Max H.). Typical stamp signed by him. | Germany, d. 1935, often on forged. Note |
| Poland | Hallon, Dr. Pavol | Malacky (Slovakia), SCF 2001 |
| Poland | Haydzicki, Marian | Tarnow (PL), 1909–85, AIEP 1960–85 |
| Poland | Hennig, K(arl), 2 | Weimar 1920, post-WW2 Dominican Rep., dealer, soldier in Ukraine WW1, also on forged (+Hoffmann cards) |
| Poland | Jendroszek, Heinrich Hubert | Lügde, BPP 2003–06, Verein Philatelistischer Prüfer |
| Poland | Korszen, Zbigniew | Lublin 2000, Polish Fed. |
| Poland | Krawczyk, Eugeniusz | Warsaw 2000, Polish Fed. |
| Poland | Kurkiewicz, Witold | Warsaw 2000, Polish Fed. |
| Poland incl. towns | Landré, Dr. George (Landre) | Goslar 1950, Bremen, b. 1899, BPP 1961, AIEP 1954–c.66 |
| Poland | Laszkiewicz, Prof. Antoni | Warsaw 1950, 1904–80, AIEP 1970–80 |
| Poland | Mikstein, S., mkstn (early mark); Mikstein (in script), 3. Note | Prof. Stanislaw M., Cracow, 1888–1956, expert c.1930–; forged (the one in script) |
| Poland | Mikulski, Zbigniew. Certif. The mark "Mikullski" is a forgery. | St. Gallen (until 1964 Warsaw), b. 1925, expert 1951–, AIEP 1960–, VÖB 1982–, [FFE1 3 (p.178) 5, PE] |
| Poland | Miszczak, Maciej | Wroclaw 2000, Polish Fed. |
| Poland | Moskauer Briefmarken-Sammler | Moscow 1897, phil. society |
| Poland | Muller (Müller, Mueller) | Also on forged |
| Poland | Pelczar, Piotr | Koszalin 2000, Polish Fed. |
| Poland | Piekut, Janusz Zbigniew | Warsaw 2000, Polish Fed. |
| Poland | Popielewski, Lech | Torun 2000, Polish Fed. |
| Poland | Rachmanow, Wladimir (von) | Warsaw 1926, Bayside NY 1950, b. 1886 |
| Poland | Rinsch, Heinrich | Essen-Stadtwald 1950, 1890–c.1975, BPP 1961, AIEP 1954–75 |
| Poland | Ryblewski, Jan | Kraków 2000, b. 1919, Polish Fed., AIEP 1972–2002 |
| Poland | Schmutz, Leslaw, 2 | Rzeszów 2000, Polish Fed. |
| Poland | Stallberg, Hermann | Wermelskirchen 1944, dealer |
| Poland | Steczynsk, M. E. | Chicago 1950 |
| Poland | Subocz, Bohdan | Warsaw 2000, Polish Fed. |
| Poland | Sztaba, Kazimierz | Kraków 2000, Polish Fed. |
| Poland | Taipale, A. | Finland? Collector? |
| Poland | Tokar, Jerzy | Lodz 2000, Polish Fed. |
| Poland | Treschkow, P. von | Rüttenscheidt (D) 1897 |
| Poland | Walisch, Stanislaw | Lodz 2000, Polish Fed. |
| Poland | Ways, Marian Zbigniew | Torun 2000, Polish Fed. |
| Poland (Cracow 1919) | Beresta (reportedly) | ? |
| Poland (Cracow 1919) | Bloch, Herbert J., 2 (manuscript). Certif. | New York NY, 1907–87, expert 1950–87, AIEP 1956–87. Note |
| Poland (Cracow 1919) | CA (or AC, in circle) | [Scan: Slawomir Sejda] |
| Poland (Cracow 1919) | Domar | Poland |
| Poland (Cracow 1919) | EL | . |
| Poland (Cracow 1919) | Filatelista Lwow | Lwow (then in Poland), pre-WW2, dealers. Mostly on forged [Stallberg] |
| Poland (Cracow 1919) | Friedel, Erich | Halle GDR, d. 1979, expert 1975–79 |
| Poland (Cracow 1919) | Kronenberg, Dr. Stanley | USA 1987 1997, collector, UPNS |
| Poland (Cracow 1919) | Ores, J. | Also on forged |
| Poland (Cracow 1919) | Philatelia Krakow | Cracow pre-WW2, dealers. Mostly on forged [Stallberg] |
| Poland (Cracow 1919) | Sutcliffe, V. | Also on forged |
| Poland (Cracow 1919) | Wallner, Dr. Ferdinand (forged), usually in handwriting. Photo | Vienna 1943, 1894–1970, dealer, AIEP 1954–, VÖB, AIEP 1954–70, BPP 1961 |
| Poland incl. locals and Polish Corps | Petriuk, Stefan | Langballigholz, BPP 1991, Polish Fed. |
| Poland incl. locals | Bojanowicz, Miroslaw A. | Rome 1949, later Wembley (GB), 1906 or 1907–86, dealer, BPP 1961, AIEP 1961–86. |
| Poland incl. PO Port Gdansk | Gilczynski, Dr. Jan | Cracow, BPP 1961 |
| Poland (locals, PO Port Gdansk) | Kalinowski, Mariusz | Warsaw 2000, Polish Fed. |
| Poland (no. 1) | Hampel, Tadusz | Lodz 2000, Polish Fed. |
| Poland (plebiscite areas) | Jakucewicz, Stefan | Warsaw 2000, Polish Fed. |
| Poland (Polish Corps) | Jungjohann, Heinz Erwin (forged), 2, 3 (used on forgeries) | St. Peter-Ording, b. 1929, expert 1970–, BPP 1970–2004, AIEP 2000–, [FFE4 (p.178) 6, PE] |
| Poland (P-P on Austria) | Koopman, Herman | Amsterdam, later Kalmthout (Belgium), dealer, d. c. 1987, BPP, AIEP 1968–87, reliable, [Flasch] |
| Poland (Przedborz) | Buchbinder, Dr. Med. Jürgen. (Used to mark forged stamps as such.) | Bad Sassendorf? c.2000, a specialist collector |
| Poland (Przedborz) | ECM (?) | . |
| Polish PO Port Gdansk | Erdwien, Volker | Elze, BPP 1996 |
| Polish PO Port Gdansk | Jungjohann, Heinz Erwin (forged), 2, 3 (used on forgeries) | St. Peter-Ording, b. 1929, expert 1970–, BPP 1970–2004, AIEP 2000–, [FFE4 (p.178) 6, PE] |
| Polish PO Port Gdansk | Kniep, Karl | Wiesbaden, BPP 1980 |
| Polish PO Port Gdansk | Landré, Dr. George (Landre) | Goslar 1950, Bremen, b. 1899, BPP 1961, AIEP 1954–c.66 |
| Portugal | Ateneu Comercial do Porto, Núcleo Filatélico. Certif. | Porto 2002 |
| Portugal | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Portugal | Ell, J(oseph) | Lisbon 1950, 1883–1957, AIEP 1954–57 |
| Portugal | Ferreira, A(rmindo) Simoes | Lisbon 1926, dealer, [Mi 1935] |
| Portugal | Greif | . |
| Portugal (Mi 1–700) | Kretzschmar, Dr. Gunter | Dresden, BPP 1991 |
| Portugal | Mozu | . |
| Portugal | Rosauer, L. | . |
| Portugal and areas | Coutinho Vieira, Maria Isabel | Portugal 2005, Inexfip apprentice |
| Portugal and areas | Lima Torres, Manuel Angelo Domenech | Portugal 2005, Inexfip member |
| Portugal and areas | Miranda de Mota, José Manuel | Portugal 2005, Inexfip chairman |
| Portugal and areas | Oliveira Pinto, Fernando de | Portugal 2005, Inexfip member |
| Portugal and areas | Vieira, Armando | Portugal (Porto?), d. 2004 |
| Portugal and Colonies | Gilbert, Carl | Porto 1897 |
| Portugal and Colonies | Mangold, Otto | Frankfurt a.M. 1897 |
| Portugal and Colonies | Morgoulis, Paul | Paris, c.1900–90, AIEP 1974–90 |
| Portugal and Colonies | Washburne, Stephen S. | USA, ISPP Portugal Society expert |
| Portuguese Colonies | Wendt, Otto | Hamburg-Blankensee, Ulzburg 1968, 1889–1969, BPP 1958–, AIEP 1954–69 |
| Propaganda forgeries | Clark, Peter | Düsseldorf, Sanderstead (Surrey), BPP 1961 |
| Propaganda forgeries WW2 | Hosang, Joachim | Since 1950s |
| Rumania (1866–72) | Birnbach, Heinrich | Berlin, b. 1872 |
| Rumania | Cividini, Dragutin (?) | Croatia of today (if same person) |
| Rumania | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Rumania (–1918) | Elbau, Peter | Fürstenau 2002, SBPV 1993– |
| Rumania | Ferchenbauer, Ulrich, Dr. Certif. | Vienna, b. 1941, son of Paul, expert 1975–, BPP 1991, AIEP 1996–, VÖB, [FFE5, PE] |
| Rumania | Fosaneanu, Paul | Bucarest 1897 |
| Rumania | FT | . |
| Rumania (Mi 8–98) | Gmach, Dr. Gertlieb | Eching a. A., BPP 2006– |
| Rumania | Heimbüchler, Fritz. Photo (second from left) | Munich, b. 1930, expert 1970–, BPP 1973–10, AIEP 1984–, [FFE3 (p. 170), PE] |
| Rumania | Horrack, Dr. Emil Edler von | Vienna 1897 |
| Rumania (old) | Köhler, H., 2, 3, 4. (= Koehler, Kohler) Fa. H. Köhler (= Firma) | Heinrich K., 1881–1945; dealers f. Berlin 1913, started expertising before 1934, Wiesbaden 1949, (cf. Gilbert & K.), in use c. 1960–95 (?), [Brühl] |
| Rumania | Krapp, W. | Vienna 1897 |
| Rumania | Krüger, Krgr (Kruger, Krueger) [also on forged] | Paul K., Berlin-Grünewald, pre–WW2, same as J. Krüger? |
| Rumania | Marco, Martin | Tel Aviv, b. 1911, dealer, expert 1948–, AIEP 1981–, [FFE5] |
| Rumania | Mosch, Semo | Giurgiu pre-WW2, collector's advert. |
| Rumania | Novak, Frantisek | Czechoslovakia, 1897–1971, AIEP 1961–71, CSF 1960– |
| Rumania (excl. Moldavia & Wallachia) | Pascanu, Leonard. Photo | Bucuresti, b. 1952, expert 1985–, AIEP 1998–, [FFE3, PE] |
| Rumania | Rosenberg Jr., B. | Bucarest 1897 |
| Rumania (Mi 36–) | Schröder, Dr. Arthur (boxed) (+forged), also Schroeder | Lippstadt/W. 1950, Mülheim/Ruhr, 1895– 1968, BPP 1958–, AIEP 1954–68, mark in use c. 1930–60 |
| Rumania | Sibiesco | The Nice 1943 dealer? |
| Rumania | Thorand, Colonel J. | Bucarest 1897 |
| Rumania | Werner, L. | . |
| Rumania (pre-1900) | Wertheimer-Ghika, Jacques | Bucarest 1950 |
| Rumania | Zoscsak, Rudolf | Vienna?, b. 1872, expert c. 1920–60 |
| Rumania (Moldavia) | Schwarz, Ludwig | Vienna, 1843–1912, [Brühl p.484] |
| Rumania (Nagyvárad local 1945) | Kiss, Lajos ('KL' in circle) | Oradea (Nagyvárad), [Flasch] |
| Rumania (Regatul) | Flasch, Dezsö | Budapest 1998, d. 2006, expert on overprints, [Flasch] |
| Rumania (Regatul) | IRO (in circle) | On genuine, [Flasch] |
| Rumania (Regatul) | Janisch, Marque Garantie | On genuine stamps, [Flasch] |
| Rumania (Regatul) | Juretzky, P. ('FF' monogram) | A forger, [Flasch 172] |
| Rumania (Regatul) | Kacskovicz, Dr. | [Flasch] |
| Rumania (Regatul) | Kapusi, Géza ('KG' in oval). Note | Debrecen, [Flasch] |
| Rumania (Regatul) | Kazár | A collector's mark?, [Flasch] |
| Rumania (Regatul) | Kemény, Andor (Kemeny) | Oradea, dealer, [Flasch] |
| Rumania (Regatul) | Kieltsch, Alfred | Sibiu (Hermannstadt) |
| Rumania (Regatul) | Kiss, Dr. | [Flasch] |
| Rumania (Regatul) | Koopman, Herman | Amsterdam, later Kalmthout (Belgium), dealer, d. c. 1987, BPP, AIEP 1968–87, reliable, [Flasch] |
| Rumania (Regatul) | LAY | On genuine, [Flasch] |
| Rumania (Regatul) | Lugosi, Döme ('L D') | [Flasch] |
| Rumania (Regatul) | Mák | [Flasch] |
| Rumania (Regatul) | Megyeri, Ferenc ('MF' in circle) | Oradea, [Flasch 118] |
| Rumania (Regatul) | Mosonyi | Also on forged, [Flasch] |
| Rumania (Regatul) | Odor, Johann/Jean (also 'O') | A forger, [Flasch 126] |
| Rumania (Regatul) | Oroszi, K. | On genuine, [Flasch] |
| Rumania (Regatul) | OTW | On genuine, [Flasch] |
| Rumania (Regatul) | Pape, Heinz. 2. Note (forged) | Used by Géza Tarján, dealer, forger, [Tyler, Flasch 130] |
| Rumania (Regatul) | Rend, Dr. Ferenc | Budapest, [Flasch 141] |
| Rumania (Regatul) | Rusu-Arad | On genuine, [Flasch] |
| Rumania (Regatul) | Strauch, Jenö | Budapest, dealer, [Flasch] |
| Rumania (Regatul) | Szalay, Dr. Béla (=Adalbert) ('Dr. Sz.'). Note (forged) | Sibiu (Hermannstadt) 1935, b. 1869, the foremost expert on these issues, [Flasch] |
| Rumania (Regatul) | Walder, Arthur ('AW') (also 'W') | Arad, five diff. marks, [Flasch 160] |
| Rumania (Regatul) | var | On genuine, [Flasch] |
| Rumania (Regatul) | Winczer, A... (boxed) | Alex W., Késmárk, [Flasch] |
| Rumania (Regatul) | ürményi (cf. 'Ph.B.') (Urmenyi) | Dr. Deszö Ürményi, Temésvar, [Flasch] |
| Rumania occ. Kolomyya | Landré, Dr. George (Landre) | Goslar 1950, Bremen, b. 1899, BPP 1961, AIEP 1954–c.66 |
| Rumania occ. Kolomyya etc. | Mayer, O. | Vienna, dealer |
| Rumania/Hungary (Székelyudv. ovpt 1944) | Sipos, Géza ('S.G.' not in oval) | Székelyudvarhely (Odorhieu), [Flasch 40] |
| Russia | Ames, Norman | Swindon 2001, Br. Soc. of Russian Phil. |
| Russia | Arcadjan (or Agadjan(ian)), F. | Paris?, on forged |
| Russia | Beeck, Edmund van der | Moscow 1897 |
| Russia | Bianchi | John Bianchi (see below), or B. Bianchi, Geneva, both dealers, up to 1940s |
| Russia | Bochmann, Dr. Eugen von | Riga, 1836–1901 |
| Russia | Buchsbayew, Dr. Paul | New York NY, b. 1952, Cherrystone Auctions, expert 1986–, AIEP 1992–, NFF, [FFE5, PE] |
| Russia | Cronin, Andrew | Toronto, b. 1925, AIEP 2000–, [FFE1 4 (p.174) 5, PE] |
| Russia | Dzenis, 2 (or Dsenis or Dzynis?) | Dzenis was a forger, cf. Dzynis |
| Russia | Ebnet, Christian | Kamenz, BPP 1991 |
| Russia | Eisold, Lothar | Lahr (form. Dresden), 1930–2002, BPP 1990–2002 |
| Russia | Fabergé, Agathon ('AgF'), 2, 3. Photo | Helsinki, 1876–1951, famous philatelist, FFF exp. comm. |
| Russia | Gosudarstvennaya kontora, 'Гос К' | On stamps sold by the Soviet Union |
| Russia | Hellman, Kaj. Certif | Espoo, b. 1948, auctioneer, expert Feb. 2000–. Note |
| Russia | Hennig, K(arl), 2 | Weimar 1920, post-WW2 Dominican Rep., dealer, soldier in Ukraine WW1, also on forged (+Hoffmann cards) |
| Russia | Hovest, Ludger | Wesel, BPP 2001 |
| Russia | Ignatoff–experts–Paris, N. | Also on forged. |
| Russia | Keiler, Dr. Eberhard, 2 (forged) | Munich 1950, Trier, BPP 1961 |
| Russia | Kief (in German type) | Also on forged |
| Russia | Lavrov, Petr | Czechoslovakia, 1895–1975, CSF expert |
| Russia | Liphschutz, Michel. Photo | Neuilly-sur-Seine, 1910–94, AIEP 1982–94 |
| Russia | Mandrovski, Nicolai | Russia, b. 1945, AIEP 1997–99, frequently on forged |
| Russia | Marbach, 2, or 'L. Marbach Wien II' | Leopold (?) M., Vienna, dealer. Note |
| Russia incl. pre-adh. | Melnikov, Leonid | Moscow, 1936–2004, expert 1983–, AIEP 1997–2004, [FFE7, PE] |
| Russia incl. Zemstvo | Moskauer Briefmarken-Sammler | Moscow 1897, phil. society |
| Russia | Pirl, Dr. P. H., 2 (Paul H. Pirl) | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Russia | Poburenny, Stefan, 'PS'. Note | PO civil servant in W. Ukraine, on forged |
| Russia | Pohl, Waldemar (Woldemar?) | Bamberg 1950, 1903–69, BPP 1961, generally reliable, also on forged |
| Russia (pre-1917) | Pritula, V. Vsevolod | Moscow 2001, b. 1937, AIEP 1992–99, frequently on forged |
| Russia | Raritan Stamps Inc. | Dayton NJ 2006, dealers |
| Russia | Rinsch, Heinrich | Essen-Stadtwald 1950, 1890–c.1975, BPP 1961, AIEP 1954–75 |
| Russia | Roig, Ramón | COMEX 1996 |
| Russia | Siewert, John | Moscow 1897 |
| Russia | Stein, Leo - Wien I | Vienna, dealer, forged [Bulat] |
| Russia | Tigerstedt, Carl-Gustaf (manuscript) | Koria (Finland), b. 1886, an owner's mark? |
| Russia | Treschkow, P. von | Rüttenscheidt (D) 1897 |
| Russia | Walker, Peter | British Soc. of Russian Philately |
| Russia | Vassilyev, Konstantin, 'KV' | Collector |
| Russia | Wassmann, Dieter | Simmern, BPP 2003–2007 |
| Russia | Winterstern, Prof. O. (in Russian) | Zurich, in use c. 1950–70 |
| Russia (air mails) | Daniel, Frantisek | Czechoslovakia, 1912–94, SCSF |
| Russia and areas | Bisk, Alexander | New York NY, dealer |
| Russia and areas | BSRP | British Soc. of Russian Philately. Note |
| Russia and all areas | Ceresa, Dr. R. J. in green, often smudged; RJC (note) | Raymond J. Ceresa, England 2001, expert 1977. Note |
| Russia and areas | Davidoff, 'D' (Cyrillic letter, 'Д') | A Russian General, on genuine, [UPNS] |
| Russia and areas | HKBT (in Cyrllic script letters under hammer and sickle) | Narodnyi Komissariat Vneshnei Torgovli, applied in 1920s in red or violet, forged |
| Russia (and areas) | Riep, Oscar | Berlin, d. 1928, dealer |
| Russia and areas | Soviet Philatelic Association (SPhA USSR (for export), SPhA (old marks), SPhA (for inland use), 2, 3? Note | Moscow. In Russian 'C ф A' = S F A |
| Russia (areas) | ALL | On forged |
| Russia (areas) | BBB (in two lines, also in circle) | On forged. Cf. Ernst |
| Russia (areas) | CM | On forged |
| Russia (areas) | Eichenthal (letters in a circle), Eichenthal (in two lines) | Ewald E., Södertälje (Sweden) 1950, prev. Tallinn, dealer, circular mark in use 1920–30s |
| Russia (areas) | Field, David | London 1926, 1871–1926, prominent dealer, also on forged. |
| Russia (areas) | Filatelista Lwow | Lwow (then in Poland), pre-WW2, dealers. Mostly on forged [Stallberg] |
| Russia (areas) | HTC (Cyrillic NTS?) | Also on forged |
| Russia (areas) | KERN | Also on forged. |
| Russia (areas) | Kurtz, F. | Also on forged |
| Russia (areas) | MG | On forged |
| Russia (areas) | Perrain, A. R. | France, dealer, [Flasch 137] |
| Russia (areas) | Roberts, C. W. (Cecil William), also in script, 'CWR' | Great Britain, 1899–1974, AIEP 1959–74, [UPNS] |
| Russia (areas) | Romeko Paris. Certif. | Dr. Serge Rockling (Rochlin, Rocklin), Paris, 1893–1975, dealer t.a. Maison Romeko 1921–c.65, AIEP 1968–75 |
| Russia (areas) | Rosselevitch, Anatoly ('Ross, 2') | Brussels 1949, later USA, d. c. 1980, dealer |
| Russia (areas) | St. b., E. ('E. St. b.') | Also on forged |
| Russia (areas) | Stolof (!) | On forged |
| Russia (areas, 'Krgr') | Krüger, Krgr (Kruger, Krueger) [also on forged] | Paul K., Berlin-Grünewald, pre–WW2, same as J. Krüger? |
| Russia (Armies) | Heymann, I. | Also on forged |
| Russia (Armies) | Irmann-Jacobsen, Hans | Norway |
| Russia (Armies) | Krynine, P. | Also on forged |
| Russia (Armies) | Odor, Johann/Jean (also 'O') | A forger, [Flasch 126] |
| Russia (Armies) | Pohl, Waldemar (Woldemar?) | Bamberg 1950, 1903–69, BPP 1961, generally reliable, also on forged |
| Russia (Armies, areas) | Az.Voka (A3.Boka) | Probably Azerbaijan Philatelic Association, also on forged |
| Russia (Armies, areas) | Lissiuk, New York | Kalenik L., New York NY, 1889–1980, dealer 1924–44, also on forged. Note |
| Russia (Armies, Siberia) | Jem, Dr. P., jem (in oval). Echt (as additional mark). Certif. | Dr. Paul Jemtschoujin, Dresden, later Mt. Kisco NY (USA), dealer 1920–60s; also on forged. Note |
| Russia incl. occ.s | Mikulski, Zbigniew. Certif. The mark "Mikullski" is a forgery. | St. Gallen (until 1964 Warsaw), b. 1925, expert 1951–, AIEP 1960–, VÖB 1982–, [FFE1 3 (p.178) 5, PE] |
| Russia (NW Army) | Behrsin, Alfred | Pskov (Pleskau), 1920s |
| Russia (NW Army) | North Western Army | On forged |
| Russia (postal history) | Holmsten, Martin | Helsinki, prev. Vaasa, b. 1951, auctions, Finn. Phil. Fed. 1997–2004 |
| Russia (pre-adh.) | Dobin, Manfred | St. Petersburg (Ru), b. 1925, expert 1991–, AIEP 1995–, [FFE4, PE] |
| Russia (Siberia) | Pappadopulo (in boxed P), SP (in circle). Stephan Aristol P. | Vladivostok c. 1918–22, Shanghai 1923–48, 1880–1953 (b. 1885?), dealer. Note |
| Russia (Siberia) | PRHO | On forged |
| Russia (Siberia) | R... ? | . |
| Russia (Siberia) | UEM (in oval) | On forged |
| Russia (South Russia Kuban Govt) | STS | . |
| Russia (South Russia, Wrangel Army) | Sredinsky Paris (or Schr...) also T Hals S.O. Paris and Hals? | Alexandre S., Paris, pre-WW2, dealer, considered to be a forger. Note |
| Russia (Wenden) | Swendsen, W. | Riga 1897 |
| Russia (Wenden) | Klichow | Berlin pre-WW2 dealer Albert Klickow? |
| Russia (Wenden) | Plamsch, Adolf | Grodno 1935, b. 1866 |
| Russia (Wenden) | Stepanow | Early 1900s, also on forged |
| Russia (Western Army, Wenden) | Hofmann, Harry von. Photo | Hamburg, b. 1931, expert 1982–2001, BPP 1976, AIEP 2000–, [FFE3 4 (p.184) 5 6, PE] |
| Russia (Zemstvo) | Greis, Prof. Dr. Ortwin. Certif. Photo | Hamburg, b. 1941, expert 1994–, AIEP 1999–, [FFE3, 5, PE] |
| Russian PO abroad | Pohl, Waldemar (Woldemar?) | Bamberg 1950, 1903–69, BPP 1961, generally reliable, also on forged |
| Russian PO Levant | Drahn, August Wilhelm, A. W. Drahn | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Russian PO Levant | Hovest, Ludger | Wesel, BPP 2001 |
| Russian PO Levant | Mavrogordato, Pierre (Peter) | Römhild 1936, Vienna, Lausanne 1926, 1870–1948, exhibitor. Note |
| Russian PO Levant | Moskauer Briefmarken-Sammler | Moscow 1897, phil. society |