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AREAS S–ZIn-page links: scroll directly to T U
VW Y . Copyright ©
2025
by G. Kock |
| Expertising area | Signature/name | Details (b. born, d. dead, f. founded) |
| Saar | Böcking, Jean (Bocking, Boecking), J. B. | Saarbrücken, 1873–1925, expert c. 1920–25, the JB mark has been forged [Wilhelm van Loo] |
| Saar | Braun, Axel | Waldmohr, BPP |
| Saar | Cartel, Dr. | Or Bartel, Dartel, Gartel? |
| Saar | 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 |
| Saar | Dünnebier, Dr. Herbert | Saarbrücken 1949. Note |
| Saar | Mertes, Albert | Sulzbach (Saar) 1949. Note |
| Saar | Ritter, Hermann | Zurich 1949, official expert 1949 |
| Saar | Robineau, F. A. | France 1966 1990 |
| Saar | Schlosser, Karl | Saarbrücken 1949. Note |
| Saar | Schubert | . |
| Saar | Schupp, Wilhelm | Sulzbach (Saar) 1949. Note |
| Saar (Mi 1–52) | Burger, Alfred (forged) | St. Ingbert 1997, BPP 1980 |
| Saar (Mi 1–52) | Ney, Herbert | Saarwellingen, BPP 2004– |
| Saar (Mi 53– incl. Officials) | Ney, Christine | Saarwellingen, BPP 1991 |
| Saar (Mi 53–205, Official) | Geigle, Christian E. | Alzenau, Grünwald 2004, BPP 2003 |
| Saar (Mi 226I–238I, 1947) | Bach, Ludwig | Saarbrücken 1949, dealer. |
| Saar (Official from Mi 52) | Hoffmann, Klaus | Schwalbach-Hülzwiler, BPP 1980 |
| Saar (Official Mi 1–32) | Bärsch, Jürgen (Barsch) | Wiesbaden, BPP 1996 |
| Saint Vincent | Grey, 2 (same rubber stamp?) | The London pre-WW2 dealer E. C. Grey? |
| Samoa | PM (or MP?, monogram) | On genuine and on forged |
| Samoa (1914–18) | Ceremuga, Krzysztof (Chris) | Sydney, b. 1973, expert 1994–, AIEP 2001–, [FFE3, 5, PE] |
| Samoa (pre-1900) | Odenweller, Robert P. | Barnardsville NJ, b. 1938, expert 1968–, AIEP 1980–, [FFE3, PE] |
| Samos | Hartmann, Ernst | Berlin-Steglitz 1950 |
| Samos | Massah, R. (in manuscript) | . |
| Samos | Schmitt, Joh. Ulrich | Diessen a.A. 2003, Munich, b. 1936, expert 1965–, BPP 1968, AIEP 1982–, [FFE5, PE] |
| Samos | Wenkums, Günther | Düsseldorf, BPP 1976 |
| San Marino | Avi, Dr. Helmuth. Certif. | Lugano 2002, SBPV |
| San Marino | Oliva, Guglielmo. Certif. | Genoa 1949 1961, 1900–1969, dealer from 1920s, great expert, AIEP 1954–69 |
| San Marino | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| San Marino | Vicini, Geom. Giovanni | San Marino 1950 |
| San Marino | Zanetti, Dr. Fiorenzo | Milano, b. 1953, expert 1989–, AIEP 1998–, [FFE3, PE] |
| Saudi Arabia | Angeloglu (Angeloglous), E. L. ('ela'). Picture. Advert. | Cairo 1905 1926 1943, b. 1878, dealer. Note |
| Saudi Arabia | Arabian Philatelic Assoc. Int. Certif. | APAI, expertising service. Cf. King. |
| Saudi Arabia | Eid, A(lbert) | Alexandria or Cairo (1949). Note |
| Saudi Arabia (Hejaz) | Frangakis, Jean | Alexandria, 1920s, dealer, on forged [APAI] |
| Saudi Arabia | King, Willie A. ('wak') | Scotland. Note. Arabian Phil. Assoc. Int. |
| Saudi Arabia | Mojaddedi ('M.S.M.') | Mohammad Sadik Al-Mojaddedi, Djeddah |
| Saudi Arabia (Hejaz) | Sarafian, K. | On forged [APAI] |
| Saudi Arabia | Thoden, Rudy J. ('RJT' in manuscript) | Melbourne FL USA, d. 2002, Arabian Philatelic Association Int. |
| Saudi Arabia | Uexküll, Jakob von, Jr. (Uexkull) | London (2002), b. 1944, see R.L.A. |
| Scandinavia | Mohrmann, Edgar. Certif. | Hamburg 1943, 1897–1964, BPP 1961, AIEP 1954–64 |
| Scandinavia | Pelander, Carl E(inar) | New York NY, 1894–1966, dealer. Note |
| Scandinavia | Strandell, Nils | Stockholm 1926 1961, 1876–1963. Note |
| Scandinavia | Wennberg, Harry ('H.W.', also 'G.W.'). Advert. | Stockholm 1926, 1872–1927, dealer, shop later owned by Imre Vajda q.v., [Postryttaren 2004] |
| Scandinavia (postal history) | Bokvaj, Milan | Prague, SCF 2001 |
| Scientific paper research | Liston, Dr. Edward M. | Belvedere CA USA, b. 1930, expert 1994–, AIEP 2002–, [FFE6 6, PE] |
| Seebeck issues | Wendt, Otto | Hamburg-Blankensee, Ulzburg 1968, 1889–1969, BPP 1958–, AIEP 1954–69 |
| Serbia | Fleck, Vladimir ('V.F.') | Zagreb, 1885–1969, expert c. 1940–69, AIEP 1958–69 |
| Serbia | Hirsch, Dr. Hermann | Munich, BPP 1958– |
| Serbia | Kardosch, Velizar M. | Romanshorn (CH) 2004, 1939–2014, SBPV, [FFE7] |
| Serbia | Schenek, Major Alfred | Graz 1897 |
| Serbia | Velickovic, Prof. Dr. Jovan ('JV' in circle), 2. Note | Belgrade, 1927–2012, expert 1975–, BPP 1991, AIEP 1994–, VÖB, [FFE2 3 5, PE] |
| Serbia | Verner, Mirko | Novi Sad 1954, 1915–82, AIEP 1958–80 |
| Serbian PO Kerkyra | Simmermacher, René | Staufen/Brsg. 2003, Freiburg, BPP 1968 |
| Slovakia | Šablatúra, Svätopluk (Sablatura) | Bratislava, b. 1929, SCF 2001 |
| Slovakia | 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 |
| Slovakia | Gilbert (+forged, 2) (in script). Photo. | Dr. Rudolf G., Prague, 1896–1984, expert –1970s, BPP 1961, forged, [Flasch] |
| Slovakia | Mahr, Max (forged) | Düsseldorf, b. 1917, BPP 1976, AIEP 1979–92 |
| Slovakia | Pittermann, Pavel. Photo | Prague, b. 1942, expert 1984–, CSF exp. chairman –2004, AIEP 1996–, [FFE2 3, PE] |
| Slovakia | Ptacovsky, Klement | Bratislava, 1940s, cf. Slovensky F. |
| Slovakia | Synek, Dr. Bohumil | Bratislava, b. 1956, SCF 2001 |
| Slovakia (postal history) | Tekel, Josef | Bratislava, 1954–2005, SCF 2001 |
| South Africa | Booleman, M. Z. | Amsterdam 1897 |
| South Africa | PFSA | Philatelic Federation of South Africa |
| South America (pre-1900) | Bühler, Georg (+forged twice). Certif. Ads. (Buhler, Buehler) | Berlin, auctioneer 1931–, dealer 1943, expert, BPP 1961. Note |
| South America | Griebert, Hugo | London, 1868–1924, dealer, [Tyler] |
| South America | Kneitschel ('VK' or in manuscript) | Victor K., Buenos Aires, dealer c. 1930–1980 |
| South America | Luff, John N. | New York 1926, 1860–1938, APS expert |
| South America | Michelsen, Dr. G. | Hamburg 1897 |
| South America | Moorhouse, Brian | Peterborough (GB) 2001, dealer |
| South America | PF. Certif. | Philatelic Foundation, NY, 1945–, [FFE2 (p.173) 3, PE]. Note |
| South America | Pujalto Madrid (?) | Dealer |
| South America (excl. Colombia), Seebeck issues | Wendt, Otto | Hamburg-Blankensee, Ulzburg 1968, 1889–1969, BPP 1958–, AIEP 1954–69 |
| South Bulgaria | Glasewald, Arthur Ernst ('A.E.') | Gössnitz, 1861–1926, dealer, father of Georg and Ruprecht, [Brühl p.497] |
| Soviet Union | Ames, Norman | Swindon 2001, Br. Soc. of Russian Phil. |
| Soviet Union | Buchsbayew, Dr. Paul | New York NY, b. 1952, Cherrystone Auctions, expert 1986–, AIEP 1992–, NFF, [FFE5, PE] |
| Soviet Union | Ebnet, Christian | Kamenz, BPP 1991 |
| Soviet Union | HKBT (in Cyrllic script letters under hammer and sickle) | Narodnyi Komissariat Vneshnei Torgovli, applied in 1920s in red or violet, forged |
| Soviet Union | Hoffman, Josef | Czechoslovakia, 1919–86, SCSF |
| Soviet Union | Hovest, Ludger | Wesel, BPP 2001 |
| Soviet Union | Keiler, Dr. Eberhard, 2 (forged) | Munich 1950, Trier, BPP 1961 |
| Soviet Union | Lavrov, Petr | Czechoslovakia, 1895–1975, CSF expert |
| Soviet Union | Liphschutz, Michel. Photo | Neuilly-sur-Seine, 1910–94, AIEP 1982–94 |
| Soviet Union | Mandrovski, Nicolai | Russia, b. 1945, AIEP 1997–99, frequently on forged |
| Soviet Union | Melnikov, Leonid | Moscow, 1936–2004, expert 1983–, AIEP 1997–2004, [FFE7, PE] |
| Soviet Union | Pritula, V. Vsevolod | Moscow 2001, b. 1937, AIEP 1992–99, frequently on forged |
| Soviet Union | Raritan Stamps Inc. | Dayton NJ 2006, dealers |
| Soviet Union | Rinsch, Heinrich | Essen-Stadtwald 1950, 1890–c.1975, BPP 1961, AIEP 1954–75 |
| Soviet Union | 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 |
| Soviet Union | Walker, Peter | British Soc. of Russian Philately |
| Soviet Union | Wassmann, Dieter | Simmern, BPP 2003–2007 |
| Soviet Union | Zierer, Hanns, H. B. Zierer, Hans Zierer, Zierer HBP (from 1991, forged). Some are dealer's marks. | Burglengenfeld 1976 2005, dealer, now independent expert, BPP 1968–91 |
| Soviet Union (air mails) | Daniel, Frantisek | Czechoslovakia, 1912–94, SCSF |
| Soviet Union (air mails) | Krutina, Vratislav | Czechoslovakia, b. 1913, SCSF |
| Soviet Union (RSFSR Postmaster Prov.) | Vinner, A. V. (boxed) | Seen on genuine |
| Space mail, rocket mail | Hopferwieser, Walter Michael | Salzburg, b. 1954, expert 1993–, AIEP 1998–, BPP 2003, [FFE2 3, PE] |
| Spain | Avia Lopez, Jaime | COMEX 1996 |
| Spain | Baschwitz, Germán | Madrid, CEM 1996, BPP 2001 |
| Spain | Burillo, Antonio | CEM expert 1996 |
| Spain | Cajal Oñate (Onate), José Antonio | Spain, b. 1933, CEM expert 1996, AIEP 1971–74. Certif. |
| Spain | Comerma | A Catalan name? |
| Spain | Critikian - Madrid | Renato (René) C., Madrid 1943, 1908–91, dealer, AIEP 1954–c.56 |
| Spain | Filatelia Madrid | Same as above? |
| Spain | Filatelia Sevillana | Sevilla, dealers |
| Spain | Frischer, 2nd vers. | Maybe Norbert Frischer, Vienna 1943 1949, dealer |
| Spain | Garcia, Filatelia (cf. Filatelia Madrid) | Madrid, dealers |
| Spain | Gimenez Morata, Antonio Luis | CEM 1996 |
| Spain | Griebert, Hugo | London, 1868–1924, dealer, [Tyler] |
| Spain | Haffner (frequently by pencil) | . |
| Spain | Hornung | Otto Hornung, England? |
| Spain | Laiz Castro, Dr. Angel | Madrid 1973, CEM 1996 |
| Spain | Larisch, Anselm. Ad. | Munich, 1843–92, dealer, successor wife Bertha, [Brühl p.492] |
| Spain | Lenze, Carlos | Madrid 1950, 1882–69, dealer, AIEP 1954–c.56 |
| Spain | Pacreu, E. | Barcelona, dealer |
| Spain | Renon | . |
| Spain | Roig, A., Barcelona, 2 (Catalan: Antoni Roig) | Dr. Antonio Roig Soler, Barcelona 1943, 1881–1970, dealer, AIEP 1954–70, his mark 2has been forged. Note |
| Spain | Roig, Ramón | COMEX 1996 |
| Spain | Ruiz, Alfonso | Madrid pre-WW2, dealer's advert. |
| Spain (excl. ovpt 1868–69 & locals) | Saeftel, Dr. Henning | Henstedt-Ulzburg, BPP 1980 |
| Spain | Sempere, José M. | Barcelona, b. 1947, dealer, expert 1983–, COMEX 1996, AIEP 1998–, [FFE3, PE] |
| Spain | Tarre, F. del (Francisco del Tarré) | Barcelona, 1906–81, dealer, AIEP 1954–c.56 |
| Spain | Tarré, Jordi (Jorge) | COMEX 1996 |
| Spain | Tarré, Lluis | COMEX 1996 |
| Spain | Watzlawick | Basel |
| Spain (also on forged) | Roig, A., Barcelona, 2 (Catalan: Antoni Roig) | Dr. Antonio Roig Soler, Barcelona 1943, 1881–1970, dealer, AIEP 1954–70, his mark 2has been forged. Note |
| Spain and areas | Galvez, Manuel, 2, 3, 4. Advert., hinge | M. Gálvez Rodriguez, Madrid 1926 1950, 1895–1960, dealer, AIEP 1954–60 |
| Spain (Carlist issues) | Senabre, (Ricardo?) | Spain |
| Spain (Civil War) | Alcalde, P. | . |
| Spain (postal forgeries) | Navarro Payá, Alfredo | Pontevedra, b. 1925, expert 1970–, AIEP 1978–, [FFE2 5, PE] |
| Spain (pre-1920) | Oliva, Guglielmo. Certif. | Genoa 1949 1961, 1900–1969, dealer from 1920s, great expert, AIEP 1954–69 |
| Spain and Colonies | Amend, Günther | Hamburg, BPP 1961 |
| Spain and Colonies | Aurioles, Emilio | Madrid 1960s, dealer |
| Spain and Colonies | CEM | Comisión de Expertos de Madrid. Note |
| Spain and Colonies | COMEX. Note | Comisión de Expertos Filatelicos, Barcelona, f. 1965, [PE] |
| Spain and Colonies | 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 |
| Spain and Colonies | Friederich, Rudolf | Hagenau i.Els. 1897, [Mi 1935] |
| Spain and Colonies | Graus, Francisco/Francesc. Certif., 2, 3 | Barcelona, b. 1939, expert 1974–, AIEP 1983–, [FFE3] |
| Spain and Colonies | Guinovart Vidal, Jorge (pencil) | Barcelona, 1920–1999, AIEP 1978–99. Photo |
| Spain and Colonies | Haeffner Frias, Julio | Barcelona, 1929–88, AIEP 1978–88 |
| Spain and Colonies | Jacob Ernst, Dr. Nestor | Madrid 1970, 1920–94, dealer (Filatelia Hobby), AIEP 1961–87 |
| Spain and Colonies | Llach Serrabella, Josep (José) (Works as member of committee.) | Barcelona, 1929–2006, expert 1964–2006, COMEX 1996, AIEP 1978–2006, [FFE3 6, PE] |
| Spain and Colonies | Monge Pineda, Pedro | Barcelona, 1890–1965, dealer, AIEP 1954–65. Note |
| Spain and Colonies | Soler Antich, Josep (José) (Works as member of committee.) | Barcelona, b. 1952, dealer, expert 1989–, COMEX 1996, AIEP 1998–, [FFE3, PE] |
| Spain and Colonies | Soro Bergua, Enrique, 'En Soro' | Barcelona, b. 1934, expert 1970–, AIEP 1980–, [FFE2 3 6, PE] |
| Spain and Colonies, Carlist Wars | Escalada-Goicoechea, Eduardo (Works as member of committee.) | Madrid, b. 1952, dealer, expert 1986–, CEM 1996, AIEP 2000–, [FFE4, PE] |
| St. Pierre & Miquelon (France Libre) | Bileski, Kasimir (KB in oval) | Winnipeg CA 1908–2005, dealer |
| St. Pierre & Miquelon | Tillard, Jean-Jacques (JJT). Certif. | St. Pierre, b. 1965, expert 2000–. Note |
| Stellaland | Helbig, Dr. Joachim (forged) | Aschheim 2003, Munich, b. 1949, expert 1979–, BPP 1980, AIEP 1992–, [FFE4, PE] |
| Stellaland | Schreuders, Dr. F. | The Hague 1897 |
| Sudan | Hass, C(harles) F. | Nashua NH (USA) 2001, dealer |
| Sudan | Helbig, Dr. Joachim (forged) | Aschheim 2003, Munich, b. 1949, expert 1979–, BPP 1980, AIEP 1992–, [FFE4, PE] |
| Sudan | Lindenberg, Paul P. | Berlin 1935, b. 1894 |
| Sudan | Pfenninger, Franz (forged, another forged) | Munich 1950, 1905–86, BPP 1958–, AIEP 1954–86 |
| Sudan | Smith, Peter A. S. (Works as member of committee.) | Ann Arbor Mich b. 1920, APS expert 1975–, AIEP 2000–, [FFE3 4 6, PE] |
| Swaziland | Schreuders, Dr. F. | The Hague 1897 |
| Sweden | Blomberg, Erik | Stockholm 1961 |
| Sweden | Carlsson, John (advert. for) | Kalmar, collector or dealer |
| Sweden | Frimärkshuset (= Frimaerkshuset) | Stockholm 1949, dealers (E. Lundström) |
| Sweden | Gordon, Gustav G.; 'Gordon' | Stockholm (Folkskoleg. 4) 1945 |
| Sweden | Grenstedt, Bo; 'BG' | (Stockholm, b. 1916 ?) |
| Sweden | Gustafson, Bertil | Sweden |
| Sweden (1855) | Harbrecht, Erich | 2004: Sorrentovägen 5, 269 34 Båstad |
| Sweden | Hedin, Ernst | Stockholm 1897 |
| Sweden | Ljungström, Dr. Ernst | Lund 1897 |
| Sweden | Lundström, Einar. Photo | Stockholm, 1910–94, dealer (Frimärkshuset), AIEP 1970–94 |
| Sweden | Menzinsky, Dr. Georg. Photo | Djursholm (Sweden) 1961, d. 1981 |
| Sweden (1920–36) | Norsten, Karl-Arne; 'KAN' | Stockholm 2008, dealer, active |
| Sweden | Obermüller, Franz | Stockholm, 1906–85, dealer (Kihlströms Frimärkshandel, f. 1933), expert |
| Sweden (1855–1919) | Obermüller-Wilén, Dr. Helena (=Obermueller Wilen). Certif. | Huddinge (SE), b. 1942, expert 1985–, BPP 1994–, AIEP 1996–, [FFE2 3, PE]. Note |
| Sweden | Pettersson, Olle | Stockholm, dealer |
| Sweden | Schultz-Steinheil, Herman | Stockholm 1961, 1895–1976 |
| Sweden (Värnamo issue only) | Sesö, Sten | Värnamo, reliable certificates |
| Sweden | Sjöman, Per (Sjoman) | Gothenburg, b. 1905, also on forged. Note |
| Sweden | Smith, Jay | NC USA, dealer, expert under own name 2003–, APS expert |
| Sweden | Svensson, Nils. Certif. | Stockholm, deceased |
| Sweden | Sveriges Filatelist Förening | Stockholm, society f. 1886 |
| Sweden | Thorsson, Lars-Erik | Sweden |
| Sweden | Tönjes | Germany? |
| Sweden | Vajda, Dr. (manuscript, in use 1940–50) | Imre Vajda, Stockholm, 1893–1968, AIEP 1958–68, cf. Wennberg |
| Sweden | Wennberg, Harry ('H.W.', also 'G.W.'). Advert. | Stockholm 1926, 1872–1927, dealer, shop later owned by Imre Vajda q.v., [Postryttaren 2004] |
| Sweden | Volin, Herbert R. Note | Calif. USA 2005, APS and PF expert |
| Sweden (post-1900) | Wahl, Günter | Dresden, b. 1929, BPP 1991 |
| Sweden | Witschi, Hans | Sumiswald 2001, SBPV until c. 2002 |
| Sweden | Witt, Helge | Copenhagen, 1917–77, AIEP 1954–77, BPP 1961 |
| Switzerland | ASEP | French for SBPV, q.v. |
| Switzerland | Bartels | Hamburg, dealer, in use c. 1950–70. Note |
| Switzerland | Berra-Gautschy, Rémy. Certif. | Monthey (CH), b. 1931, expert 1972–, AIEP 1985–, SBPV, [FFE3, PE] |
| Switzerland | Bohler, René. Certif. | Hindelbank 1974, SBPV |
| Switzerland | Bossert, H. W. Certif. | Basel 2005, independent expert |
| Switzerland | Cueni, Dr. Werner. Photo | Basel 1949, 1897–1955, official expert 1949, AIEP 1954–55 |
| Switzerland | 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 |
| Switzerland | Estoppey, Maurice E. | Lausanne, 1915–98, dealer, AIEP 1965–98 |
| Switzerland | Ey, Dr. Eduard ('EyEd') | Germany?, 1887–1967 |
| Switzerland | Frey, Ch. Th. | Freiburg/Br., BPP 1961 |
| Switzerland | Glaettli, Ad., Zürich | Ad. Glättli & Cie, Zurich, 1940s, dealers |
| Switzerland | Guggisberg, Dr. Alfred | Biel 2001, d. 2004, SBPV |
| Switzerland (1862–1907) | Guinand, Pierre | Morges 2001, b. 1940, expert 1967–, SBPV, [FFE2 3] |
| Switzerland | Hassel, Ch. | Basel 1949, dealer |
| Switzerland (1850–83) | Hermann, Urs | Liestal (CH), SBPV, BPP 2003– |
| Switzerland | Hertsch, Arthur | Bern (Senf, Zumstein), 1884–1973 |
| Switzerland | Hertsch, Christoph | Bern (Zumstein), b. 1963, expert 1986–, AIEP 1998–, SBPV, [FFE2 4, PE] |
| Switzerland | Hertsch, Max | Bern (Zumstein), b. 1923, expert 1950–, AIEP 1965–, [FFE3 4, PE] |
| Switzerland (Official, Int. Org.) | Hoffner, Johannes | Ziefen CH 2010, BPP 2011–, SBPV |
| Switzerland (pre-1862) | Hunziker, Hans F. Certif. | Basel, 1911–94, AIEP 1960–94 |
| Switzerland (Zu 21–27) | Huzanic, Mario | Affoltern am Albis CH, BPP 2011–, SBPV 2019– |
| Switzerland | Kaiser, Slavomir | Denmark 1982, 1960s |
| Switzerland (pre-1907, hotel posts) | Kimmel, Kurt E. (forged) | Massagno (CH) 2001, Richterswil (CH), b. 1941, expert 1972–, BPP 1976, AIEP 1991–, SBPV, [FFE3 5, PE] |
| Switzerland | Kirchhofer, Hans | Geneva 1897 |
| Switzerland | Kottelat, Ernest R. | Bern 1943 1961, 1896–74, dealer, AIEP 1954–74 |
| Switzerland | Mantke | . |
| Switzerland | Marchand, Jean-Claude. Certif | Geneva, b. 1960, dealer, expert 1981–, SBPV 1984–, AIEP 1994–, BPP 1991, [FFE4, PE] |
| Switzerland | Moser, Biel, F. (Moser-Räz), 2. Certif. | Fritz Moser-Räz, Biel (Switzerland), 1907–90, AIEP 1958–74 |
| Switzerland (1843–62) | Nussbaum-Bisser, André. Certif. | Basel, 1908–88, BPP 1968, AIEP 1966–88 |
| Switzerland (1843–) | Rellstab, Emil | Mönchaltorf (CH), 1928–2006, expert 1972–2006, BPP 1976, AIEP 1981–2006, SBPV until c. 2002, [FFE1 2 3 5, PE] |
| Switzerland. Note | Renggli, Hans-Peter. Certif. | Reinach BL (CH) 2001, SBPV –2002 |
| Switzerland | Reuterskiöld, Baron Axel de | Lausanne, 1860–1937, philatelist |
| Switzerland | Ritter, Hermann | Zurich 1949, official expert 1949 |
| Switzerland | Rupp, Bruno | Liechtenstein, b. 1912, SBPV (now retired), AIEP 1970–74 |
| Switzerland | Schaadt, Ernst. Certif. | Lieli CH 1981 |
| Switzerland | Schulze, Adolf | Zurich, 1841–1892 |
| Switzerland | Schwendimann, Fred. | St. Gallen 1949, official expert 1949 |
| Switzerland | Sigerist-Moser, E. | Schaffhausen 1897 |
| Switzerland | Städele (Stadele) | . |
| Switzerland | Trüssel, Kurt | Lucerne 2001, SBPV until c. 2002 |
| Switzerland | Weid, Alain von der ('+Weid.' in manuscript). Certif. | Geneva 2001, SBPV until c. 2002 |
| Switzerland | Weka | . |
| Switzerland | Willadt, Carl | Pforzheim 1897 |
| Switzerland | Zanini, Mario. Certif. | Bellinzona-Molinazzo (CH), 1914–81, AIEP 1958–81 |
| Switzerland | Zeigler, Robert G. | Indianapolis IN 2001 |
| Switzerland | Zumstein & Cie, Zco, 2, Z.Co. Certif. Hinge. Note | Bern, dealers f. 1905, see also Hertsch |
| Switzerland (cancellations) | Liniger, Werner | Bern, b. 1918, BPP 1976, AIEP 1964–94 |
| Switzerland (Cantons and Rayons) | Bianchi, John | Zurich-Zollikon 1926 1950, (see above) |
| Switzerland (Cantons) | Deyhle & Co, Robert | Bern, dealers, experts 1880– |
| Switzerland (Cantons) | Rachmanow, Wladimir (von) | Warsaw 1926, Bayside NY 1950, b. 1886 |
| Switzerland incl. hotel posts | Abt, Walter | Thun (CH), Basel, BPP 1980, SBPV |
| Switzerland (Int. Org.) | Weggler, Max | Zurich, dealer, BPP 1961 |
| Switzerland (Official excl. perf.) | Trabert, Dr. C. H. | Baden-Baden, BPP 1980 |
| Switzerland (UN, Int. Org.) | Misteli, Prof. Charles | Geneva 1950; collection is in the UN Geneva Postal Museum since 1962 |
| Syria | Noury | Same as Nouri? |
| Syria (Arab Kingdom) | Darteyre, Didier (pencil) | France, 1920s, dealer |
| Syria (Arab Kingdom) | Frangakis, Jean | Alexandria, 1920s, dealer, on forged [APAI] |
| Syria (Arab Kingdom) | JHA (Jacques H. Adjarian) | Paris, 1920s, dealer |
| Syria (Arab Kingdom) | JZN (J. Z. Nubar) | Paris, 1920s, dealer |
| Syria (Arab Kingdom) | LDW (Leonard D. Waldman) | New York NY, 1950–70s, dealer |
| Syria (Arab Kingdom) | VR (Victor Robert) | Paris, 1920s, dealer |
| Syria (Arab Kingdom) | Zagha, Moïse (Mourad), in script in circle | Damascus, 1920s, reputable dealer |
| Syria (Arab Kingdom) | Zohby, G. | Also on forged |
| Taiwan (Formosa) | Poon, Kam Leung. Photo. (Works as member of committee.) | Hong Kong, b. 1936, expert 1995–, AIEP 2000–, [FFE4, PE] |
| Thailand | Buranasombati, Pichai (Works as member of committee.) | Thailand, b. 1944, expert 1999–, AIEP 2003–, [FFE7, PE]. Note |
| Thailand (pre-1925) | Gmähle, Markus (= Gmaehle) | Munich, BPP 1991 |
| Thailand | Gongvatana, Surajit (Works as member of committee.) | Thailand, b. 1951, expert 1991–, AIEP 2003–, [FFE7, PE] |
| Thailand | Koh, Seow Chuan | Singapore, b. 1939, expert 1970–, AIEP 2002–, FIP President, [FFE6, PE] |
| Thailand | Thailand, Philatelists Association of | Bangkok, expert committee |
| Thrace | Esrefbey (= Esref Bey?) | Turkey |
| Tibet | Adgey-Edgar, Capt. Walter Herbert | Great Britain, 1887–1977, philatelist. Note. |
| Tibet | Dahnke, Kurt H. Certif. | Nuremberg, BPP 1976 |
| Tibet | Franke, Wilfried | Cologne, b. 1947, BPP 1996 |
| Tibet | Hellrigl, Dr. Wolfgang C. | Bozen (Italy), 1941–2010, expert 1975–2010, AIEP 1980–2010, [FFE1 2 3, PE] |
| Tibet | Orth, Dr. F. Alfred | Bad Hersfeld (Germany), 1925–93, BPP 1980, AIEP 1983–93 |
| Tibet | Vincke, Frhr. von | Wiesbaden, BPP 1958– |
| Togo (1914–18) | Ceremuga, Krzysztof (Chris) | Sydney, b. 1973, expert 1994–, AIEP 2001–, [FFE3, 5, PE] |
| Togo (Fr.-Eng. occup.) | PS | On stamp w. forged (laser?) ovp (eBay) |
| Transatlantic mails (postal history) | Winter, Richard F. | Greensboro NC USA, b. 1937, expert 1991–, AIEP 2002–, [FFE6, PE] |
| Transjordan: see Jordan | ||
| Transvaal | Ostara | Dealer? |
| Transvaal | Pirl, Dr. P. H., 2 (Paul H. Pirl) | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Transvaal | Schreuders, Dr. F. | The Hague 1897 |
| Trieste | Diena, Dr. Enzo. Certif. Note | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Trieste | Mondolfo, Renato. Certif. | Trieste 1950, Rome 1961, 1918–92, AIEP 1954–92 |
| Trieste | San Giusto, Filatelia. Certif. | Trieste 1956 2002, dealers. Note |
| Trieste | Sancin, Danilo. Certif. Note | Trieste 1956, expert. Cf. San Giusto. |
| Trieste A | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Trieste B | Tubinovic, Dejan (T over a Cyrillic D) | Belgrade c. 1980, deceased |
| Trieste B | Velickovic, Prof. Dr. Jovan ('JV' in circle), 2. Note | Belgrade, 1927–2012, expert 1975–, BPP 1991, AIEP 1994–, VÖB, [FFE2 3 5, PE] |
| Trieste B, Istria B | Zrinjscak, Predrag (PZ in circle). Certif. | Pforzheim, b. 1946, expert 1985–, AIEP 2000–, [FFE4, PE] |
| Turkey | Agaogullari, Ziya | Turkey, Turkish Phil. Fed. 2001 |
| Turkey | Angelides, Antoine | Istanbul, pre-WW2, dealer |
| Turkey | Arikan, Arman. Photo | Istanbul, dealer (Kamer Arikan), Turkish Phil. Fed. 2001 |
| Turkey | Arsman, N. Cengiz. Photo | Turkey, b. 1940, Turkish Phil. Fed. 2001 |
| Turkey | Berger, P. E. (two sizes) | . |
| Turkey | Bernichon, Jules, Paris. (Jules Anthoine) | Paris, d. 1911, dealer, mark forged by [Wondelgem] |
| Turkey | Busch, Werner | Berlin-Wilmersdorf 1950 |
| Turkey | 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 |
| Turkey | Eid, A(lbert) | Alexandria or Cairo (1949). Note |
| Turkey | Engler, Peter Ernst. Certif. | Owingen (Germ.) 1995, indep. expert. Note |
| Turkey | Gerzabek, Hubert | Vienna 2001, VÖB |
| Turkey | Gilbert, Fr. Gg. | Note |
| Turkey, Cilicia | Giray, Kemal | London 2015, dealer Balkanphila |
| Turkey | Glasewald, Arthur Ernst ('A.E.') | Gössnitz, 1861–1926, dealer, father of Georg and Ruprecht, [Brühl p.497] |
| Turkey | Griebert, Hugo | London, 1868–1924, dealer, [Tyler] |
| Turkey | Heger, Emil | Vienna 1920 1935, b. 1877 |
| Turkey | HGH (in script) | . |
| Turkey | ISFILA | Istanbul, expert committee f. 1992. Note |
| Turkey | Jane, R. | . |
| Turkey | Kicukis, Athanas ('AK' in script) | Istanbul before 1956, dealer |
| Turkey | Kraus, A., Leipzig | Leipzig, dealer |
| Turkey | Krüger, Krgr (Kruger, Krueger) [also on forged] | Paul K., Berlin-Grünewald, pre–WW2, same as J. Krüger? |
| Turkey | Kuyas, Tevfik (manuscript) | Sisli-Istanbul, 1916–89, AIEP 1977–89 |
| Turkey | Larisch, Anselm. Ad. | Munich, 1843–92, dealer, successor wife Bertha, [Brühl p.492] |
| Turkey | Locher, Paul | Nice 1926, dealer, same as in Switzerland (Spiez) later (e.g. 1943)? |
| Turkey (Levant) | Marco, Martin | Tel Aviv, b. 1911, dealer, expert 1948–, AIEP 1981–, [FFE5] |
| Turkey | Marcus, M. H. Advert. | Istanbul 1905, dealer |
| Turkey | Matl, Albert. 2 | Vienna, b. 1924, expert 1963–, BPP 1976, AIEP 1964–, VÖB, [FFE5, PE] |
| Turkey | Nakri, Yakup | Istanbul, b. 1962, expert 1995–, AIEP 2003–, [FFE7, PE] |
| Turkey | Nasmi | . |
| Turkey | Nouri, M. | Istanbul-Stamboul, pre-WW2, dealer |
| Turkey | Okday, Ismail Hakki | (One IHO: Istanbul, 1881–1977) |
| Turkey | Papuçcuoglu, Bülent (Papuccuoglu) | Turkish Phil. Fed. 2001. |
| Turkey | Passer, Adolf | Prague, 1865–1938 |
| Turkey | Prendushi, Zef ('ZP' boxed). Letterh. | Skutari, dealer c. 1928–42, also on forged |
| Turkey | Ritter, Hermann | Zurich 1949, official expert 1949 |
| Turkey | Schmelzer | . |
| Turkey | SP. Garan. (in triangle) | . |
| Turkey | Thier, 2 (both in German type; 'T' twice on used stamps). Note | Max Thier, Berlin-Charlottenburg, 1852–1925, renowned expert 1890–1920 |
| Turkey (Mi 86–) | Unger, Arthur | Vienna, BPP 2008– |
| Turkey | Vachat, Guy du. Certif. | Villemomble (F) 2003, BPP 1996–2006 |
| Turkey | Willmann, Dr. Erich von | Munich 1950, Bad Waldsee, BPP 1961 |
| Turkey, Levant POs | Yaremdji, Apik and Michel. Note. Advert. | Istanbul 1905, 1926, dealers 1885–1930s |
| Tuva | Vincke, Frhr. von | Wiesbaden, BPP 1958– |
| Ukraine | AL (or LA) (monogram) | . |
| Ukraine | ALL | On forged |
| Ukraine | Arkel, .. W. von, Bremen, 2 | Bremen, dealer |
| Ukraine | Arnold, Alwin | Berlin-Wilmersdorf, b. 1878, UPV, BPP 1935, [UPNS] |
| Ukraine | Baumgarten, Josef, 2 (cf. [Flasch]), 'JB' (monogram). Note | Vienna 1920s, dealer, also on forged |
| Ukraine | BBB (in two lines, also in circle) | On forged. Cf. Ernst |
| Ukraine | Biermann | Germany, collector, on genuine, [UPNS] |
| Ukraine | Billig, P., Wien | Not Fritz Billig? |
| Ukraine | Bisk, Alexander | New York NY, dealer |
| Ukraine | Bohdan, J., 'J.B.' | Rumania, on forged |
| Ukraine | Booleman, W. R. | Netherlands? |
| Ukraine | Breul, Arno(ld), 'A' (in circle) | Gera-Zwötzen 1950 1961 |
| Ukraine | Bulat, H. (in Cyrillic script; also in Latin script), Bulat BPP | John Bulat, Yonkers NY, d. 1999, BPP 1976 |
| Ukraine | CA (in circle) | Reported to be Breul, q.v. |
| Ukraine | Chomiak, Maksym | Canada, collector |
| Ukraine | Cohring, F., Berlin | Berlin, dealer |
| Ukraine | Davidoff, 'D' (Cyrillic letter, 'Д') | A Russian General, on genuine, [UPNS] |
| Ukraine | Diepenbroek, Willem J. | Bussum (Netherl.) , purchased Dr. Seichter's collection, BPP 1980 |
| Ukraine | Duscha, Walter | Germany, b. 1903?, in Ukr. during WW2 |
| Ukraine | Dzenis, 2 (or Dsenis or Dzynis?) | Dzenis was a forger, cf. Dzynis |
| Ukraine | Dzynis Riga | Riga, dealer, usually known as Dzenis, produced ovpts using stolen devices |
| Ukraine | Engels | Berlin, UPV |
| Ukraine | Faludi, S., Berlin | Berlin, dealer |
| Ukraine | Fanngi(?), S. | . |
| Ukraine | Filatelista Lwow | Lwow (then in Poland), pre-WW2, dealers. Mostly on forged [Stallberg] |
| Ukraine | Freyse, Gustav ('GF'). Advert. | Hannover, d. 1921, dealer |
| Ukraine | Friedel, A. | Vienna, collector, on genuine, [UPNS] |
| Ukraine | Fränzl, Karl (Franzl, Fraenzl) | Vienna, 1920 |
| Ukraine | Gosudarstvennaya kontora, 'Гос К' | On stamps sold by the Soviet Union |
| Ukraine | Hekker (also in upper case letters) | . |
| Ukraine | Hennig, K(arl), 2 | Weimar 1920, post-WW2 Dominican Rep., dealer, soldier in Ukraine WW1, also on forged (+Hoffmann cards) |
| Ukraine | Ignatoff–experts–Paris, N. | Also on forged. |
| Ukraine | Ignetov, Nick | . |
| Ukraine | Jutzewitz, Ing. (engineer) | . |
| Ukraine | Kedrovsky, Volodymyr, 'VK', 'K' | 1890–1970, political and military leader |
| Ukraine | Kobylanski, Eugen | Vienna, BPP 1980 |
| Ukraine | Koliski, Artur ('A.K.' in circle) | Berlin, collector |
| Ukraine | Koopman, Herman | Amsterdam, later Kalmthout (Belgium), dealer, d. c. 1987, BPP, AIEP 1968–87, reliable, [Flasch] |
| Ukraine | Kronenberg, Dr. Stanley | USA 1987 1997, collector, UPNS |
| Ukraine | Krüger, J., Berlin | Berlin, dealer, [UPNS] |
| Ukraine | Krüger, Krgr (Kruger, Krueger) [also on forged] | Paul K., Berlin-Grünewald, pre–WW2, same as J. Krüger? |
| Ukraine | 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] |
| Ukraine | Landmann, K., Berlin; 'Landm' | Odesa, Berlin, dealer; not same person? |
| Ukraine | Leopol., FSA. | . |
| Ukraine | Liska, Antonin L. | Prague, dealer, [UPNS], expert 1957– |
| Ukraine | Lück, E. | . |
| Ukraine | Mazepa, James | USA, collector's mark, UPNS |
| Ukraine | Odor, Johann/Jean (also 'O') | A forger, [Flasch 126] |
| Ukraine | Oldrow, K., Exp. | Collector and expert, [UPNS] |
| Ukraine | Olendski, S., Riga | Riga, [UPNS] |
| Ukraine | Oprysko, Modest M. | Baldwin Place NY 2001, UPNS expert |
| Ukraine | Peters, Oskar Erich, 'O.E.P.', trident | Rabenstein 1950, Chemnitz 1920 1961, b. 1884, 1920s expert, UPV |
| Ukraine | Philatelia Krakow | Cracow pre-WW2, dealers. Mostly on forged [Stallberg] |
| Ukraine | Philatella Dortmund | Germany, also on forged |
| Ukraine | Pohl, Waldemar (Woldemar?) | Bamberg 1950, 1903–69, BPP 1961, generally reliable, also on forged |
| Ukraine | Popoff | Kyiv, later Moscow, collector |
| Ukraine | Poppers | . |
| Ukraine | Pos, Gregory (Cyrillic 'P' in circle) | London, expert since 1970s |
| Ukraine | Roberts, C. W. (Cecil William), also in script, 'CWR' | Great Britain, 1899–1974, AIEP 1959–74, [UPNS] |
| Ukraine | Rodendorf, Karl (Cyrillic 'KP') | Moscow, a forger, always on his forged |
| Ukraine | Romeko Paris. Certif. | Dr. Serge Rockling (Rochlin, Rocklin), Paris, 1893–1975, dealer t.a. Maison Romeko 1921–c.65, AIEP 1968–75 |
| Ukraine | Rudminski Odessa | Odesa, dealer |
| Ukraine | Ruthphil | Dealers? |
| Ukraine | Rutkowski (also in script) | Ukraine, later Bulgaria, collector, main distributor of the so-called Kherson local |
| Ukraine | Sadowski, Prof. | . |
| Ukraine | Schirnhorn (in scrip) | Captain, German Army, Ukraine WW1 |
| Ukraine | Schmidt | Germany, engineer, [UPNS] |
| Ukraine | Schneider | Dealer, [UPNS] |
| Ukraine | Schulmann | . |
| Ukraine | Seefeldner, Gustav, Prof. GS + heron, 'SG' (in circle) | Salzburg 1896, Vienna pre-1950, UPV, [Wilhelm van Loo] |
| Ukraine | Seichter, Dr. Rudolf, 2 & supplemental marks (1 & 2: c.1947–60), 3 (c.1960–) | Soltau/Hannover 1950, 1889–1977, BPP 1958–, AIEP 1956–74; mark forged, [UPNS] |
| Ukraine | Serebrakian, Souren David, 'SER' (in rectangle). S. Serebrakian Inc. | Monroe NY, in Brussels (1931 1949), 1900–91, dealer, also on forged. Note |
| Ukraine | SG Philatelique | Also on forged |
| Ukraine | Shchapov, Peter, 'P.S.' | Moscow c. 1920, dealer, speculator |
| Ukraine | Shramchenko, Capt. Svyatoslav de | Poland, USA, also on forged. Note |
| Ukraine | Skweir, J. Michael, also 'CKBIP' | USA, collector, UPNS member |
| Ukraine | SR (or RS) (in circle) | . |
| Ukraine | Stella - Odessa | Odesa, dealers, [UPNS] |
| Ukraine | Stohmann, André; 'Stohm.', 'AS' (device stolen) | Vienna, Berlin 1929 as dealer, VÖB 1935 1950, UPV |
| Ukraine | Strandell, Nils | Stockholm 1926 1961, 1876–1963. Note |
| Ukraine | Sturm, A. | Tallinn, dealer, 1910s 20s, [UPNS] |
| Ukraine | Svenson (in Gothic), 'SV' (in circle) | Constantin Svenson, Wiesbaden, b. 1871 in Kyev, was in Ukraine c. 1920 |
| Ukraine | Tarasoff, V. V. | Dealer |
| Ukraine | Teschke, K., Leipzig | Leipzig, dealer |
| Ukraine | Teuber, Wilhelm | Lehrte (Hannover) 1950, b. 1882, UPV |
| Ukraine | Trachtenberg, B. ('B. Tracht. Odessa', 2) | Odesa c. 1920?, dealer, forged, also on forged |
| Ukraine | Turpin, F. B.*, F. B. Turpin London. *Note | London e.g. 1910s, dealer, also on forged |
| Ukraine | Ukkan Asuncion Paraguay (3 lines) | Collector or society, [UPNS] |
| Ukraine | Ukr.-Phil. Verb. e.V. (used c.1937–60 by Teuber, Seichter), 2 (c.1920–60). Note on the UPV marks. | Ukraine-Philatelisten-Verband, a German association f. 1920, [UPNS] |
| Ukraine | UPNS. Certif. | Ukrainian Philatelic and Numismatic Society, Expertizing Committee, USA; cf. Tkachuk. Note |
| Ukraine | Wynnyczok, Don | USA, a collector's mark, UPNS |
| Ukraine (esp. Podolia) | Wyrowyj, Eugene, 'Vyrovyj', 'E. Wyrowyj Praha', 'W' | Prague, b. 1889, prominent collector, UPV, [UPNS] |
| Ukraine, Mariupol | Tkachuk, Jerry (Yaroslav) G. Note | Warren MI 2001, UPNS expert (chairman) |
| Uruguay | Diaz Paulos, Fausto | Montevideo, b. 1927, expert 1980–2002, AIEP 1980–2003, [FFE3] |
| Uruguay | 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 |
| Uruguay | HA | . |
| Uruguay | Hernández, Carlos | Dealer |
| Uruguay | Isaac, Charles | Marseille, b. 1922, dealer, expert 1950–, AIEP 1975–, [FFE3, PE] |
| Uruguay | Rauh | . |
| Uruguay | Robauer, L. | ? |
| Uruguay | Rocha, Carlos Hernández | Federación Urugaya de Filatelia |
| Uruguay | Soto Hno (hermanos - brothers) | Uruguay? |
| Uruguay incl. postal history and stationery | Jones, Dr. César. Certif. Photo | Montevideo, b. 1944, expert Fed. Uruguaya de Filatelia 1984–, APS 1985–. Note |
| USA | Anderson, Spencer ('S.A.') | USA |
| USA | APEX (formerly APES) | American Philatelic Expertizing Service (APS and ASDA), 1903–, [PE]. Note |
| USA | Ashbrook, Stanley B. | Cincinnati 1926, 1882–1957(58?) |
| USA | Boker, John R., jr. | USA, b. 1913, Philatelic Foundation |
| USA (pre-WW1) | Brettl, Maria | Vaterstetten, b. 1930, expert 1964–, BPP 1968–10, AIEP 1968–, [FFE3, PE] |
| USA | Costales, Eugene N. Note | New York NY, 1894–1984, dealer 1926 |
| USA | Estoppey, Edouard S. | Lausanne 1926, dealer, off. expert 1949 |
| USA | Hahn, Calvet M. | New York, d. 2004, PSE 2000 |
| USA | Herst jr., H(erman) | New York NY, 1909–99, dealer |
| USA | Hornung | Otto Hornung, England? |
| USA | Jakubek, Wolfgang | Hamburg, Giekau 2002, BPP 1976 |
| USA | Kloss, Paul | Dresden, 1848–1918, expert c. 1880– |
| USA | Luff, John N. | New York 1926, 1860–1938, APS expert |
| USA | Neinken, Mortimer L. | New York NY, 1896–1984, PF chairm. |
| USA | PF. Certif. | Philatelic Foundation, NY, 1945–, [FFE2 (p.173) 3, PE]. Note |
| USA | Rendon, Alex (Alejandro) (Works as member of committee.) | New York NY, b. 1940, expert 1970–, AIEP 1982–, [FFE5, PE] |
| USA | Roosevelt, Franklin D. | Item that belonged to President R. |
| USA | Schmidt, W. | Hattenheim (D) 1897 |
| USA | Sloane, George B. (reportedly forged) | New York NY 1926, 1898–1958, dealer |
| USA | SPA. Certif. | USA 1976, Society of Philatelic Americans, expert committee, (cf. Torrey) |
| USA | Tell, Jay | Encino CA 2006, b. 1944, dealer 1965– |
| USA | Torrey, Dr. Gordon H. | Washington DC 1976, 1919–95, chairman, Expert Committee, Society of Philatelic Americans SPA |
| USA | Zanini, Mario | Bellinzona-Molinazzo (CH), 1914–81, AIEP 1958–81 |
| USA incl. locals | Emery, Prof. Dr. W. O. | Crawfordsville (USA) 1897 |
| USA (locals) | Lowe, Robson. Certif., 2 | London 1926, 1905–97, dealer, chairman BPA Expert Committee, AIEP 1970–97. |
| USA (postal history), BNA, Br. Colonies | Frajola, Richard C. | New Mexico, Profess. Stamp Experts 2000 |
| USA (postal history, fancy cancellations), BNA, Br. Colonies | Hines, Edward | Long Beach CA, dealer, PF, Profess. Stamp Experts 2000 |
| USA (Providence RI reprints) | BOG ERT DUR BIN (one letter on back of each stamp in sheet) | Bogert & Durbin Co, New York NY 1898, dealers |
| USA (provisionals), Hawaii | Colson, Warren H. ('W.H.C.') | Boston, 1882–1963, dealer |
| USA (Tennessee postal history) | Matz, Billy. BM | USA 2000 |
| USA, BNA, Br. Colonies | Banks, Barry | Ogden Utah, Empire Philatelics, Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Bates, Richard | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Belasco, Steven R. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Brooksbank, Randall | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Bulkley, Jonathan | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Bustillo, Larry | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Celler, Dick | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Champagne, David | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Champagne, Richard | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Corette, Tom | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Coughlin, Ray L. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Cowitt, Richard I. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Cunliffe, Robert | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | D'Ambrosio, Susan | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Dumaine, Robert F. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Farrington, Jeremiah A. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Friedberg, Richard | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Granowski, Steven | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Green, Brian M. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Hasid, Ariel | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Hoffer, Charles | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Hofsetz, Allen | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Holschauer, George | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Jackson, Eric | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Kendall, Thomas | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Kingsley, Tom | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Kirker, Joe | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Knapp, Rev. Stephen | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Langs, William S. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Lee, James E. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Lesher, Ron | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Litle, William A. | Dealer, Profess. Stamp Experts 1990– |
| USA, BNA, Br. Colonies | Lyons, Larry | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Maisel, Bill | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Mandel, Frank | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Markovits, Robert L. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Medcalf, Don | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Metzger, Steven | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Meyersburg, Robert B. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Milgram, James W., MD | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Molesworth, Jack E. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Orenstein, Jonathan | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Peoples, Dennis | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Phillips, David G. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Piller, Stanley M. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | PSE | Professional Stamp Experts, Florida US, f. 1987, cf. Amer. Phil. Feb. 1998 |
| USA, BNA, Br. Colonies | Rosen, Bill | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Salisbury, Steven | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Salz, Richard H. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Sandfield, Byron | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Schull, Lew | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Schuman, Stephen D. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Schuman, William O. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Sharp, Frank | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Shoemaker, J. Randall | Dealer, Profess. Stamp Experts 1987– |
| USA, BNA, Br. Colonies | Solens, Jack | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Stilwell, George | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Tocher, Don | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Wagshal, Jerome S. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Weiss, William R., Jr. | Profess. Stamp Experts 2000 |
| USA, BNA, Br. Colonies | Wolford, Kirk | Profess. Stamp Experts 2000 |
| USA, US Possessions | Crowe, William T. (Works as member of committee.) | New York NY, b. 1947, expert 1973–, PF, AIEP 1999–, [FFE5, PE] |
| Vatican | Avi, Dr. Helmuth. Certif. | Lugano 2002, SBPV |
| Vatican | Diena, Dr. Enzo. Certif. Note | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Vatican | Sorani, Silvano. Certif. | Milan, b. 1934, BPP 1996 |
| Vatican | Vespermann, H(ans) Waldemar. Certif. | Hamburg, BPP 1968 |
| Venezuela | Heister, Dr. Knut | Bad Münstereifel, BPP 1996 |
| Venezuela (1859–80) | Kimmel, Kurt E. (forged) | Massagno (CH) 2001, Richterswil (CH), b. 1941, expert 1972–, BPP 1976, AIEP 1991–, SBPV, [FFE3 5, PE] |
| Venezuela | Meri G., Pedro A. | Caracas, Asofilca 2015 |
| Venezuela | Moratti M., Alberto | Caracas, Asofilca 2015 |
| Venezuela | Zanini, Mario | Bellinzona-Molinazzo (CH), 1914–81, AIEP 1958–81 |
| Western Ukraine | Baumgarten, Josef, 2 (cf. [Flasch]), 'JB' (monogram). Note | Vienna 1920s, dealer, also on forged |
| Western Ukraine | Bulat, H. (in Cyrillic script; also in Latin script), Bulat BPP | John Bulat, Yonkers NY, d. 1999, BPP 1976 |
| Western Ukraine | Cherniavsky, Dr. Ivan, 'JCz' | Kolomyya, [Bulat] |
| Western Ukraine | Friedl, Rudolf | Vienna 1926, 1862–1942, dealer, brother of S. Friedl |
| Western Ukraine | Hoss | On forged, [Bulat] |
| Western Ukraine | Körner, Karl, Wien I (Korner, Koerner). Advert. | Vienna, dealer, forged, [Bulat] |
| Western Ukraine | Landré, Dr. George (Landre) | Goslar 1950, Bremen, b. 1899, BPP 1961, AIEP 1954–c.66 |
| Western Ukraine | Poburenny, Stefan, 'PS'. Note | PO civil servant in W. Ukraine, on forged |
| Western Ukraine | Stein, Leo - Wien I | Vienna, dealer, forged [Bulat] |
| Western Ukraine | Tkachuk, Jerry (Yaroslav) G. Note | Warren MI 2001, UPNS expert (chairman) |
| Western Ukraine | UPNS. Certif. | Ukrainian Philatelic and Numismatic Society, Expertizing Committee, USA; cf. Tkachuk. Note |
| Worldwide | AIEP | Association Internationale des Experts en Philatélie, Zurich, f. 1954 |
| Worldwide (pre-1900) | Alcuri, Paul J., 2 (pencil). Certif. | Canterbury (GB), dealer 1945– |
| Worldwide | Anbeisser, J. H. | Cologne 1897 |
| Worldwide | APEX (formerly APES) | American Philatelic Expertizing Service (APS and ASDA), 1903–, [PE]. Note |
| Worldwide | Bach, Jean Paul | Basel, b. c. 1953, dealer 1981–, member of BPB 1999, q.v. |
| Worldwide | Bacon, Sir E(dward) D(enny). Certif. | London, 1860–1938, RPSL Exp. Comm. |
| Worldwide (pre-1900) | Balasse, Guy | Brussels 1999, [Soeteman]. Note |
| Worldwide | Bartels, J(ohn) M(urray) | Am. Phil. Ass. expert early 20th century |
| Worldwide | Behrens, 2 (for use on Propaganda Forgeries), advert. | Walter B., d. 1950, dealers, Braunschweig, also on forged, [Flasch] |
| Worldwide | Bloch, Herbert J., 2 (manuscript). Certif. | New York NY, 1907–87, expert 1950–87, AIEP 1956–87. Note |
| Worldwide | Borek, 2, 3 | Richard B. (Sr.), 1874–1947, dealers f. 1893, in Braunschweig, [Flasch] |
| Worldwide | Born, Carl | Leipzig 1897 |
| Worldwide | Boule, Maurice | Monaco 2002, Paris 1999, b. 1943, dealer, expert 1987–, AIEP 2002–, [FFE6, PE] |
| Worldwide | BPA. Certif1, 2 | British Philatelic Association, f. 1928, [PE] |
| Worldwide | Brainard (in script) | Christopher E. B., New Jersey, dealer (B&S Stamp Bourse), [Flasch] |
| Worldwide | Bristow, Mercer | B. 1951, APS Dir. of Exp., [FFE3] |
| Worldwide | Brun, Aimé. Photo. Certif. Note. Advert. | Paris 1926, 1887–1969, dealer 1926. Note 2 |
| Worldwide (pre-1900) | Bühler, Georg 2 (+forged twice). Certif. Ads. (Buhler, Buehler) | Berlin, auctioneer 1931–, dealer 1943, expert, BPP 1961. Note |
| Worldwide | Calves, R(oger) (in script (often worn); and in manuscript) | Paris, b. 1921, dealer, AIEP 1960–99, BPP 1984 (no longer). Note |
| Worldwide | Cancellation removed | Stamp's cancellation has been removed |
| Worldwide | Cancelled to order (CTO), 2, 3 | "G" means printed cancellation |
| Worldwide (pre-1940) | Caspary, Alfred H. | New York NY, 1877–1955, PF |
| Worldwide | Castle, M(arcellus) P(urnell) | England, 1849–1917, RPSL |
| Worldwide | Champion, Th(éodore), 2?, 3 (3a), (also a winged wheel twice, in violet) | Paris 1926, 1873–1954, dealer 1902–. |
| Worldwide | Costantino, E. | Probably a US collector's mark |
| Worldwide | Dalston, Thomas | England, b. 1845 |
| Worldwide | Deutsche Kinderpost Amt I | "German Children's Post Office I" |
| Worldwide (pre-1900) | 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 |
| Worldwide (not reprints, ovp, Indian st.) | Earée, Rev. Robert Brisco | Cheltenham, 1846–1928 |
| Worldwide | Eckhardt, W. J. | US (?) forgery collector's mark |
| Worldwide | Economist, ESC | Economist Stamp Co (Edward Stern et al.), New York NY 1926 |
| Worldwide | Eichele, Martin | Basel, dealer (Philaclassica) 1985–, member of BPB, q.v. |
| Worldwide | Errington & Martin, 2. Note | S. Hackney 1926, dealers c. 1920–50 |
| Worldwide | Evans, Major Edward B. | England, 1846–1922, RPSL 1894–. |
| Worldwide | F | Can mean 'Forgery' |
| Worldwide | Ferchenbauer, Paul | Vienna 1950 1961 |
| Worldwide | Ferchenbauer, Ulrich, Dr. Certif. | Vienna, b. 1941, son of Paul, expert 1975–, BPP 1991, AIEP 1996–, VÖB, [FFE5, PE] |
| Worldwide | Ferrari Fabergé | Item sold on the Ferrary or A. Fabergé auctions (?) |
| Worldwide (pre-1900) | Fiecchi, Alfredo E(rmo) | Milan 1950, 1900–82, BPP 1961, AIEP 1954–82. Note |
| Worldwide | Flierl, Harry C. | Buffalo, APS expert (chairm. 1942–54) |
| Worldwide | Four (the number in a circle) | The stamp has been repaired |
| Worldwide | Friedl (in script), Otto W. Friedl | New York NY (prev. Vienna), 1878–1952, son of S. Friedl, expert 1935–, Friedl Expert Comm. f. 1948, [Brühl p.483, APS]. |
| Worldwide | Fulpius, George(s), Dr. ('G.F.' ?, GF in manuscript) | Geneva 1949, 1886–1955, official expert 1949, AIEP 1954–55 |
| Worldwide | Georgstrasse 2, Chemnitz | Chemnitz pre-WW2, dealer's advert. |
| Worldwide | Gibbons Ltd, Stanley, SG (reported to be Gibbons' mark) | London, dealers, expertising until 1927. BA is reportedly the Buenos Aires office |
| Worldwide | Glasewald, Arthur Ernst ('A.E.') | Gössnitz, 1861–1926, dealer, father of Georg and Ruprecht, [Brühl p.497] |
| Worldwide (pre-1900) | Glavany, Alfred | Istanbul about 1900, dealer. Note |
| Worldwide | Gordon, Gustav G.; 'Gordon' | Stockholm (Folkskoleg. 4) 1945 |
| Worldwide | Graham, David ('DG' in manuscript) | USA (2002), principal auctioneer Greg Manning Auctions |
| Worldwide (pre-1900) | Grobe, Hans; Grobe (forged) | Hannover 1943, 1899–1994, auctioneer, BPP 1958–, AIEP 1954–82 |
| Worldwide | Walli, Harry W. ('H.V.') | Helsinki, 1900–1970 |
| Worldwide | Hall, T(homas) W(illiam) | London, 1861–1937, Chm. RPSL Exp. Comm. |
| Worldwide | Hanciau, Louis Francois | Brussels, 1835–1924, expert employed by Moens |
| Worldwide | Hoffman Stamp Co. Hinge | The Hoffman Stamp Co Inc, NY |
| Worldwide | Hofmann, Bruno | Leipzig, 1951–61 |
| Worldwide (pre-1930) | Holcombe, Peter (manuscript). Certif1, 2 | Lucerne 2001, d. 2012, independent expert |
| Worldwide | Holmes, H(enry) Robert | England, 1897–1989, Chairman RPSL Expert Committee, AIEP 1967–74 |
| Worldwide | Houtzamer, W. (= W. Howard) | London 1903–, formerly The Hague, dealer 1902–, Br. dealers' ass. STPA expert 1926 |
| Worldwide (classics) | 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 |
| Worldwide (excl. USA) | Klein, Eugene. Note | Philadelphia PA 1926, 1878–1944, dealer |
| Worldwide | 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] |
| Worldwide | Kraft, Jürgen (Juergen, Jurgen) | Canary Is. 2005, former dealer. Note |
| Worldwide (pre-1900) | Krumhaar, Otto | Hamburg 1950, 1888–1967, Edgar Mohrmann auctions, BPP 1961, AIEP 1958–67 |
| Worldwide (pre-1940) | Lichtenstein, Alfred F. | New York 1926, 1876–1947, chairm. PF |
| Worldwide | Loo, H. v. d. (Hendrik van der Loo) | The Hague (Rotterdam pre-WW2), dealer –1960s?, [HvdVlist/WvLoo] |
| Worldwide | Lutz Committee Ltd, The. Certif. | New York NY 10021, 1984, Abbot Lutz, d. c. 1986, dealer, also on forged |
| Worldwide | Mar..., Erkki | Mikkeli (Finland), collector |
| Worldwide | Marimian | British dealer? |
| Worldwide | Maury, Arthur (in manuscript). Picture | Paris, 1844–1907, dealer, also a company f. 1860 (cf. Lemaire), [Tyler] |
| Worldwide | Michel ('Echt Hugo Michel Apolda'), 2 (1917). Advert. | Hugo Michel-Triller, Apolda 1910, Weimar 1917 1926, 1866–1944, dealer, cat. publisher/editor. Note |
| Worldwide | Moens, Jean-Baptiste | Brussels, 1833–1908, famous dealer, [Tyler] |
| Worldwide (pre-1900) | Mohrmann, Edgar. Certif. | Hamburg 1943, 1897–1964, BPP 1961, AIEP 1954–64 |
| Worldwide | Moritz, Rud. | Frankfurt, dealer |
| Worldwide | Moschkau, Dr. Alfred | Germany, 1848–1912, expert 1871–77, [Brühl p.481] |
| Worldwide | ND (G.: Neudruck; Nachdruck) | Common mark for reprints |
| Worldwide | Nederlandsche Postzegelveiling B.V. | Amsterdam 1979, auction house |
| Worldwide | neudruck | German for Reprint (not an exp. mark) |
| Worldwide | Oliver, F(rank) H. | London 1926, b. 1867(66?), dealer, BPA expert |
| Worldwide | Pemberton, Edward L(oines) | England, 1844–78. |
| Worldwide | Pemberton, Percival Loines | London, 1875–1949, BPA expert, son of E.L. |
| Worldwide | PESA | Philatelic Expertizing Service of America Inc., 1984 (12 mo.), APS, ASDA, GPS |
| Worldwide | PF. Certif. | Philatelic Foundation, NY, 1945–, [FFE2 (p.173) 3, PE]. Note |
| Worldwide (–1900) | Pfenninger, Franz (forged, another forged) | Munich 1950, 1905–86, BPP 1958–, AIEP 1954–86 |
| Worldwide | PFSA | Philatelic Federation of South Africa |
| Worldwide | Pinchot, S. | 1980s |
| Worldwide | Pirl, Dr. P. H., 2 (Paul H. Pirl) | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Worldwide | Rapp, Peter | Wil (CH), auctioneer 1970–, member of BPB, q.v. |
| Worldwide (pre-1900) | Renard, Nicholas | Mürnau 1950 |
| Worldwide | Rep. (boxed) | The stamp has been repaired |
| Worldwide | Replik (printed; easily erased) | On back of Peter Winter forgeries |
| Worldwide | Ressel, Oskar | Berlin 1943, dealer |
| Worldwide | Richter, Georg (in script or in block), 2 | Berlin, 17.11.1874–22.3.1960, expert c. 1930–60, frequently also on forged. Note |
| Worldwide (also on forged) | Roig, A., Barcelona, 2 (Catalan: Antoni Roig) | Dr. Antonio Roig Soler, Barcelona 1943, 1881–1970, dealer, AIEP 1954–70, his mark 2has been forged. Note |
| Worldwide | Roumet, Octave | Paris 1926, dealer |
| Worldwide | RPS, RPSL Certif1, 2, 1917. Note | Royal Philatelic Society London, expert comm. 1894–, [FFE2 p.173; Brühl p.482, PE] |
| Worldwide | Sanhotz Paris (or San Hotz) | Dealer? |
| Worldwide | Schlesinger, Julius ('J.SCHL', 2). Note. Unidentified Schlesinger | Berlin, 1858–1920, dealer, considered not fully reliable, [Brühl, Tyler]. Advert. |
| Worldwide | Schwindt, Holger ('HSdt' monogram) | Helsinki, 1899–1955, FFF exp. comm. 1932– |
| Worldwide | Scott Stamp & Coin Co ('SS&CCo') | New York, early 20th century, dealers |
| Worldwide | Séfi, Alexander J. (Sefi) | London 1926, 1889–1934, dealer, STPA expert. |
| Worldwide | Senf Leipzig, Gebr., 2. Note. Advert. | Dealers f. 1881, Leipzig, [Tyler] |
| Worldwide | Serrane, Fernand | Nice 1926, 1860–1932, famous expert |
| Worldwide | Sismondo, Sergio. Certif. Note | Syracuse NY, 1943–2023, dealer, expert 1993–, AIEP 1999–c.2006, [FFE3, PE] |
| Worldwide (rarities) | Sohn, Emil | Frankfurt 1897 |
| Worldwide | SPA. Certif. | USA 1976, Society of Philatelic Americans, expert committee, (cf. Torrey) |
| Worldwide | Sperati Reproduction | Stamped by BPA on Sperati forgeries |
| Worldwide (pre-1940) | Steinway, Theodore E. | New York NY, 1883–1957, chairman PF |
| Worldwide | Stock, Ernst | Berlin, dealer 1889–1931 |
| Worldwide (pre-1900) | Starauschek, Friedrich (expert of Heinrich Köhler) | Berlin-Tempelhof & Wiesbaden 1950, Berlin-Charlottenburg 1961, BPP 1961 |
| Worldwide | Stolow, J. H., 2, Stolow. Certif. Berlin-Charltbg.: mark, F. S. R. Stolow | New York (Julius & Henry S., 1930s to 1970s), Berlin, Munich (Henry Stolow); also on forged. Note |
| Worldwide | Stuckert Düsseldorff | Anton S., Düsseldorf-Oberkassel 1943 1950, dealer (firm still existing) |
| Worldwide | Thier, 2 (both in German type; 'T' twice on used stamps). Note | Max Thier, Berlin-Charlottenburg, 1852–1925, renowned expert 1890–1920 |
| Worldwide | Timroth, Georg von ('GvT') | Helsinki, 1887–1961 |
| Worldwide | Torrey, Dr. Gordon H. | Washington DC 1976, 1919–95, chairman, Expert Committee, Society of Philatelic Americans SPA |
| Worldwide | Verband Philatelistischer Experten (VPEX) | Austrian assocation of 17 experts (2025) |
| Worldwide | Verband philatelistischer Prüfer e.V. (VP) | German assocation of 25 experts (2025) |
| Worldwide | Verein Philatelistischer Prüfer e.V. (VPh) | German assocation of 13 experts (2025) |
| Worldwide | Westoby, W. A. S. | England, 1815–99, philatelist. |
| Worldwide | Viner, Dr. Charles William | London, 1813–1906 |
| Worldwide (aerophilately) | Jones, Dr. César. Certif. Photo | Montevideo, b. 1944, expert Fed. Urugu-aya de Filatelia 1984–, APS 1985–. Note |
| Worldwide (air mail ovpt.s) | Cueni, Dr. Werner. Photo | Basel 1949, 1897–1955, official expert 1949, AIEP 1954–55 |
| Worldwide (air mails) | Aisslinger, Horst | Aalen, 1925–92, BPP 1976, AIEP 79–92 |
| Worldwide (air mails) | Bísek, Jirí | Praha, expert 1974–2002, SCF 2001 |
| Worldwide (air mails) | Braunstein, Ilia. Mark? | Brussels, 1909–80, AIEP 1970–80 |
| Worldwide (air mails) | Dahmann, Kurt | Berlin-Wilmersdorf 1961, b. 1915 |
| Worldwide (air mails?) | Elliott N.Y. | New York NY, dealers |
| Worldwide (air mails) | Hildesheim, Werner | Dieringhausen 1950, 1906–74, BPP 1958–, AIEP 1954–c.56 |
| Worldwide (air mails) | Kosel, Adolf | Austria, 1911–74, AIEP 1960–74 |
| Worldwide (air mails) | Lissiuk, New York | Kalenik L., New York NY, 1889–1980, dealer 1924–44, also on forged. Note |
| Worldwide (air mails) | Longhi, Fiorenzo. Note | Belgirate VB (Italy) 2001, b. 1951, dealer, expert 1995–, AIEP 2003–, [FFE7, PE] |
| Worldwide (air mails) | Muller, (Raymond) Frank | Les Lilas, Royan (France), 1900–84, AIEP 1958–84 |
| Worldwide (air mails) | Sanabria. Inc. N.Y., 2 | Nicolas Sanabria Inc, New York NY. Note |
| Worldwide (air mails) | Sieger, H. E. | Hermann Ernst Sieger, 1902–54, dealers f. 1922, AIEP 1954 |
| Worldwide (air mails) | Sieger, Hermann W(alter) | Lorch/Württ. 1950 2003, b. 1928, dealers (Hermann E. Sieger f. 1922), expert 1955–, BPP 1961, AIEP 1956–, [FFE4, PE] |
| Worldwide (air mails) | Silombra, Jean | Paris 1961, 1915–98, AIEP 1954–98 |
| Worldwide (air mails) | Stahel, Oskar | Zurich 1949, official expert 1949 |
| Worldwide (air mails) | Trachtenberg, Henri | Ivry-sur-Seine, 1908–87, AIEP 1964–87 |
| Worldwide (all forgeries) | Fournier, François | Marks on front or back of stamps from the Geneva albums of samples |
| Worldwide (cinderellas) | Uexküll, Jakob von, Jr. (Uexkull) | London (2002), b. 1944, see R.L.A. |
| Worldwide (forgeries only) | Richardson F (in circle; F= forgery) | David R., GB, a forgery collector's mark |
| Worldwide (forgeries) | Falsch | German for 'Forged' |
| Worldwide (forgeries) | Falsificat, Falso, Falsum | Latin or Spanish for 'Forgery', 'Forged' |
| Worldwide (forgeries) | Faux | French for 'Forged', see also Fournier |
| Worldwide (forgeries) | Tillhör H.F.F. | Owners mark, see Helsingfors F... |
| Worldwide (forgery researcher) | Ragatz, Dr. Lowell | Madison Wis. 1926, 1897–1978, dealer (Reliance Stamp Co. t.a. George van den Berg) |
| Worldwide (locals) | Ringström, Sigurd (Ringstrom) | Trelleborg (Sweden), 1908–92, philatelist, author |
| Worldwide (reprints) | Ohrt, Major Paul | Düsseldorf 1926, 1867–1944 |
| Worldwide (revenues) | Forbin Paris, A(lfred) | Paris, pre-WW2, dealers, [Flasch] |
| Worldwide (telegraph) | Pieper, Dr. Hans | Kirchheim, BPP 1976 |
| Worldwide (Zeppelin) | Falk, Arthur | New York State, dealer |
| Worldwide (Zeppelin) | Onofri, Mario. Certif. | Italy, 1895–1968, AIEP 1958–68 |
| Worldwide (Zeppelin) | Savini, A. | . |
| Worldwide (Zeppelin, catapult mail) | Leder, Dieter | Meersburg (Germany), b. 1970, BPP 1998–2005, AIEP 2002–, [FFE4 6, PE] |
| Worldwide, especially German area | Pfä. [German: Postfälschung] | On postal forgeries in addition to name |
| Worldwide. Also on forged | BPSB, Briefmarkenprüfstelle Basel | Basel, expert committee. Note. Certif. |
| Yugoslavia | Bar, Julij ('J3ar'). Certif. | Ljubljana 1941, expert c. 1955–80 |
| Yugoslavia (1918–41) | Benussi, Ruggero | Bolzano, 1924–2004, expert 1948–2003, AIEP 1964–2003, [FFE6] |
| Yugoslavia | Croatian Philatelic Association | Zagreb |
| Yugoslavia (ovpt Bosnia) | Curinaldi, Dr. | Luigi von Curinaldi (Alois Kurinaldi), 1908 ? |
| Yugoslavia | Dujmic, Zdravko(?) | Zagreb, c. 1950–75 |
| Yugoslavia (excl. locals) | Ercegovic, Velimir; ('V.E' in circle) Certif1, 2 | Zagreb d. c. 1992, BPP 1980, c. 1970–92, [Flasch] |
| Yugoslavia | Ernst Belgrade, M. | [Flasch] |
| Yugoslavia | Friedl, Ing. (= engineer) | Maybe Rudolf Friedl |
| Yugoslavia | Hrvatski Filatelisticki Savez | Zagreb 1950 |
| Yugoslavia (Mi 1–450) | Huzanic, Mario | Affoltern am AlbisCH, BPP 2011–, SBPV 2019– |
| Yugoslavia | Krefl, F. | . |
| Yugoslavia | Marjanovic (script, 2 ver.). Certif. | Yugoslavia, expert c. 1960– |
| Yugoslavia (1918–29) | Mayer, Friedrich | Munich-Pasing 1961, expert 1950–, BPP 1958– |
| Yugoslavia (see note) | Marinšek, Aleš | Ljubljana. Note |
| Yugoslavia | Petric, Nicola | Zagreb |
| Yugoslavia | Pit, D. M. (in square) | . |
| Yugoslavia | Rieger, F. | Berlin-Reinickendorf 1961 |
| Yugoslavia (1929–) | Schlenger, Karl-Wilhelm | Krefeld, d. 1987, BPP 1980 |
| Yugoslavia (pre-1941) | 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 |
| Yugoslavia | Teuber, Wilhelm | Lehrte (Hannover) 1950, b. 1882, UPV |
| Yugoslavia incl. SHS | Tubinovic, Dejan (T over a Cyrillic D) | Belgrade c. 1980, deceased |
| Yugoslavia | Velickovic, Prof. Dr. Jovan ('JV' in circle), 2. Note | Belgrade, 1927–2012, expert 1975–, BPP 1991, AIEP 1994–, VÖB, [FFE2 3 5, PE] |
| Yugoslavia | Verner, Mirko | Novi Sad 1954, 1915–82, AIEP 1958–80 |
| Yugoslavia | Zrinjscak, Predrag (PZ in circle). Certif. | Pforzheim, b. 1946, expert 1985–, AIEP 2000–, [FFE4, PE] |
| Yugoslavia (certain former areas, see note) | Boskovic, Zoran (ZB), 2 (in use 2005–). Certif. | Belgrade, b. 1957, expert 2001–, Phil. Assoc. Serbia & M. Note |
| Yugoslavia (Croatia) | Colic, J. V. (Jerko V.) | Zagreb during WW2 |
| Yugoslavia (locals) | MP (in circle) | On forged only, [Flasch 122] |
| Yugoslavia (ovpt SHS, Slovenia) | Horvat, R. | Croatia, 1940s |
| Yugoslavia (ovpt. Bosnia and Slovenia) | Novak, D. | Giessen, BPP 1991 –2004 |
| Yugoslavia (Slovenia 1919) | Gaber, Ante | Ljubljana 1935 |
| Yugoslavia (ovpt.s) | Fleck, Vladimir ('V.F.') | Zagreb d. 1970s, 1885–1969, expert c. 1940–69, AIEP 1958–69 |
| Yugoslavia (SHS) | Altstädter, Dr. | [Flasch] |
| Yugoslavia (SHS) | Ambroz, O. | Eszék (Hungary), a forger, [Flasch] |
| Yugoslavia (SHS) | Erös, Aladár | Szabadka |
| Yugoslavia (SHS) | Flasch, Dezsö | Budapest 1998, d. 2006, expert on overprints, [Flasch] |
| Yugoslavia (SHS) | Gonic, N. | Novi Sad (=Neusatz) |
| Yugoslavia (SHS) | Gound, Ernst | Zagreb |
| Yugoslavia (SHS) | Krebs, Arnold | . |
| Yugoslavia (SHS) | LL (in circle) | On genuine, [Flasch] |
| Yugoslavia (SHS) | Martinkovic, J. | Zagreb, Federation Chairman |
| Yugoslavia (SHS) | Pape, Heinz. 2. Note (forged) | Used by Géza Tarján, dealer, forger, [Tyler, Flasch 130] |
| Yugoslavia (SHS) | Philatelia Subotica, 2 | Szabadka, dealer, on genuine, [Flasch] |
| Yugoslavia (SHS) | Racic | Croatia, on genuine, [Flasch] |
| Yugoslavia (SHS) | RB | Perhaps Ruggero Benuzzi (q.v.), [Flasch] |
| Yugoslavia (SHS) | Sips, Zoran | Zagreb, CPS 2000– |
| Yugoslavia (SHS) | Valic, R. | [Flasch] |
| Yugoslavia (SHS) | Weiss, Oskar?. Advert. | Zagreb, pre-WW2, [Flasch] |
| Yugoslavia (SHS, Medumurje, Prelog, Mursko & Prekomurje 1919) | Gregorcic, (H.) Vilim (William) | Mandroviceva 1935, Zagreb |
| Yugoslavia (WW2) | Novakovic, Dr. Brana ('H9' in circle) | Expert of the Yugoslav Phil. Society c. 1977–90 |
| Yugoslavia and areas | Caran, Dr. Mirko | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Yugoslavia and areas | Mrdja, Miodrag | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Yugoslavia and areas | Petrovic, Bogdan | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Yugoslavia and areas | Radanovic, Radenko R. | Banja Luka 2004, Phil. Assoc. Serbia M. |
| Yugoslavia and areas | Radicevic, Djordje | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Yugoslavia and areas | Ristic, Jovan | Belgrade 2004, Phil. Assoc. Serbia & M. |