Next
pageIn-page links: skip directly to N O
P R . Copyright © 2012 G. Kock
Image links open in this same window. Click BACK on your browser to
return to this site.
Previous page
Main page with contact information and
the introduction.
Names A–F, Names G–L,
Names S–Z,
Areas A–E, Areas F–G,
Areas H–R, Areas S–Z,
First names, Stamp Forgery Guide
| Signature | Expertizing area | Details (b. born, d. dead, f. founded) |
| m (large size, 4x3 mm) | Crete (Therison) | Seen on genuine, original Therison stamps |
| M + Sz ('M/cross/Sz') | Hungary | Hungarian Philatelic Federation, 1926– |
| Mćrket er ćgte men, ureglementeret afstemplet | Greenland (parcel stamps) | Danish for: "The stamp is genuine but cancelled contrary to regulations". |
| Macdonnell, David | Ireland | Dublin, b. 1954, expert 1981–, AIEP 2001–, [FFE5 6, PE] |
| Macoveanu, P., 2 | Europe | Paris 1956, 1990s. Note |
| Macudziński, Viktor | Germany East | . |
| Madame Joseph Forged Cancel (boxed, in green). Note | Br. Colonies | Applied by Stanley Gibbons Ltd to stamps with forged postmark, c. 2000– |
| Madarasz, Jules (= Gyula) | Hungary | Budapest, 1900–81, AIEP 1970–81 |
| Mahé, Pierre-Marie | France | Paris, 1833–1913 |
| Mahr, Max (forged) | Czechoslovakia, Slovakia, Bohemia & Moravia, Sudetians | Düsseldorf, b. 1917, BPP 1976, AIEP 1979–92 |
| Maier, Jörg. Certif. | Chile (incl. occ. of Peru) | Bubenreuth, Munich, b. 1940, expert 1980–, BPP 1980–, AIEP 1991–, [FFE3, PE] |
| Maier Berlin, M. Kurt (very small size) | Germany and States, Hungary etc. | Michael Kurt M., Berlin, 1885–1949, dealer, expert –1931 |
| Maigatter, Lutz | Germany East (Bezirk 1948) | Viersen, BPP 1991–2008 |
| Maisel, Bill | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Majer | Czechoslovakia | . |
| Majörg, Karl | Austria (post-1945 postal history) | Wartberg a.d.K. (Austria) 2001, VÖB |
| Majoros, Laszlo | Hungary (Sopron 1956) | Budapest 2001 |
| Majs, Sándor | Hungary | Budapest, dealer, [Flasch] |
| Mák | Rumania (Regatul) | [Flasch] |
| Maka, Zdzislaw | Poland (1944–) | |
| Malecek, Jaroslav (in script) | Czechoslovakia (Hradcin issue) | Prague, b. 1940, SCF 2001 |
| Mandel, Frank | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Mandrovski, Nicolai | Russia, Soviet Union | Russia, b. 1945, AIEP 1997–99, frequently on forged |
| Mangold, Otto | Portugal and Colonies | Frankfurt a.M. 1897 |
| Mansfeld, Kurt. Certif. | German Colonies | Bad Kreuznach, BPP 1958– |
| Mantow (Mantau), Sophie ('S.M.') | Europe | Berlin 1905, dealer. Advert. |
| Mantke | Switzerland | . |
| Mar..., Erkki | Worldwide | Mikkeli (Finland), collector |
| Marbach, 2, or 'L. Marbach Wien II' | Hungary, Russia | Leopold (?) M., Vienna, dealer. Note |
| Marcel c.at Anvers | Latin America | Forged, also on forged |
| Marchand, André | . | France, 1916–97, AIEP 1970–75 |
| Marchand, G. | France | Paris 1949, dealer |
| Marchand, Jean-Claude. Certif. | Switzerland | Geneva, b. 1960, dealer, expert 1981–, SBPV 1984–, AIEP 1994–, BPP 1991, [FFE4, PE] |
| Marco, Martin | Rumania, Turkey (Levant), Israel | Tel Aviv, b. 1911, dealer, expert 1948–, AIEP 1981–, [FFE5] |
| Marconnet, M. | France and Colonies | Nancy 1897 |
| Marcus, M. H. Advert. | Turkey | Istanbul 1905, dealer |
| Mareš (Mares) | Czechoslovakia | Czechoslovakia, pre-WW2 |
| Maresch, Wilhelm H. P. | Canada, BNA | Toronto, b. 1926, dealer, expert 1956–, AIEP 1976–c.2006, [FFE3, PE] |
| Margue, Claude | France and Colonies | Paris, AIEP 1964–87 |
| Marimian | Br. Colonies, Worldwide? | British dealer? |
| Marjanovic (script, 2 ver.). Certif. | Yugoslavia | Yugoslavia, expert c. 1960– |
| Markovits, Robert L. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Markstein, József | Hungary (air mails) | Budapest, expert comm. chairm. |
| Marque Garantie – Soc Mis – | Hungary (on all 16 Nov. 1919 ovpt.s; see cat.s) | Genuine mark is in same colour as stamp |
| Margue, Léon-Pierre | France and Colonies, Europe | See Miró, Léon |
| Marquelet | French Colonies | France?, dealer |
| Marriott, Sir John B(rook) | . | Guildford (GB), 1922–2001, RPSL Expert Committee 1965–, AIEP 1986–2000 |
| Martin, Col. D. R. (manuscript) | Pakistan (ovpt on India) | Great Britain |
| Martin, Felix | Germany (air mails) | Chemnitz 1950 1961, 1890–c.1956, AIEP 1956–c.56 |
| Martinaš, Ivan | Fiume | Rijeka 2007. Note |
| Martinkovic, J. | Yugoslavia (SHS) | Zagreb, Federation Chairman |
| Marx, Dr. | German States | . |
| Marxer, Peter. Certif. | Liechtenstein | Vaduz, SBPV 1988–, BPP 1990– |
| Marziano, Pascal. Certif. | France (modern specialities 1940–) | Cap d'Ail (F) 2007, ASPPI. Note |
| Massah, R. (in manuscript) | Samos | . |
| Mathŕ, Dr. Thomas | Italy (postal history: Roman States, Trieste) | Girlan (I), b. 1972, expert 1999–, AIEP 2005– |
| Matheisen, Karl-Heinz | Memel | Neuss, BPP 1984 |
| Matl, Albert, 2. Certif. | Austria (incl. PO Levant and Crete), Lombardy-Venetia, Turkey, Japan | Vienna, b. 1924, expert 1963–, BPP 1976, AIEP 1964–, VÖB, [FFE5, PE] |
| Matsumoto, Jun Ichi | Japan and areas | Japan, ECPM (q.v.) 2001 |
| Mattila, Esa | Finland (preadhesive postal history) | Espoo, Finn. Phil. Fed. 2009–2011 |
| Matz, Billy. BM | CSA, USA (Tennessee postal history) | USA 2000 |
| Maury, Arthur (in manuscript). Picture | Worldwide | Paris, 1844–1907, dealer, also a company f. 1860 (cf. Lemaire), [Tyler] |
| Maus, Julius | Ionian Is. | Baden-Baden 1935, 1855–1935 |
| Mavrogordato, Pierre (Peter) | Russian PO Levant | Römhild 1936, Vienna, Lausanne 1926, 1870–1948, exhibitor. Note |
| May, U. | German States (Bavaria) | . |
| Mayer | Hungary (Debrecen) | Also on forged, [Flasch] |
| Mayer, Friedrich | Yugoslavia (1918–29) | Munich-Pasing 1961, expert 1950–, BPP 1958– |
| Mayer, Henry | Germany East | Uelzen, b. 1964, BPP 1998– |
| Mayer, Max J. | Japan (excl. occ.s) | Munich, Obergünzburg, BPP 1977–97 |
| Mayer, Stephan, Dr. | Austria (cancellations) | Vienna 1928 |
| Mayer, O. | Rumania occ. Kolomyya etc. | Vienna, dealer |
| Mazepa, James | Ukraine | USA, collector's mark, UPNS |
| Mazo, Jorge S. del | Argentina | Buenos Aires, 1899–1982, AIEP 1971–82 |
| Mazurek, F. J. | Czechoslovakia | Owner's/dealer's mark, Polish? [P.Hoffm.] |
| MDR | Japanese occ. (all territories) | See Rowell |
| Medcalf, Don | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Mefesz Sopron, cf. MF | Hungary (Sopron 1956) | Students' league, [Flasch 17, 117] |
| Megyeri, Ferenc ('MF' in circle) | Rumania (Regatul), Hungary (Debrecen) | Oradea, [Flasch 118] |
| Mehlmann, Volker | German States (NDP and Alsace-Lorraine) | Dormagen, BPP 1991 |
| Meier, Heinrich | German States (Prussia) | Munich, b. 1928, BPP 1969–80 |
| Meiners, Roland | German South West Africa | Cologne, BPP 2001 |
| Meinertzhagen, Louis Ernest | France | London 1926, 1887–1941, RPS Expert Comm. |
| Melnikov, Leonid | Russia incl. pre-adh., Soviet Union | Moscow, 1936–2004, expert 1983–, AIEP 1997–2004, [FFE7, PE] |
| Mendelsohn Paris, B. | France and Colonies | Dealer? |
| Menge, Heinz | . | Dusseldorf, 1886–1595, BPP 1958–, AIEP 1954–59 |
| Menzinsky, Dr. Georg. Photo | Finland, Sweden | Djursholm (Sweden) 1961, d. 1981 |
| MEPSI. Certif. | Mexico | Mexico Elmhurst Phil. Soc. Int., USA |
| Merkel | Germany East | . |
| Merkur | Br. Guiana | 1973 |
| Merschkötter, Dr. | Germany (1945 locals) | . |
| Mertens | Great Britain | Two dealers in Brussels 1949 |
| Mertes, Albert | Saar | Sulzbach (Saar) 1949. Note |
| Metzer | German States | . |
| Metzger, Steven | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Meyer, Bernd | Germany (Infla incl. Official) | Chemnitz 1991 2003, b. 1940, expert 1988–, BPP 1990– |
| Meyersburg, Robert B. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| MF (in dotted circle), cf. Mefesz | Hungary (Sopron 1956) | . |
| MF (in full circle) | Rumania (Regatul), Hungary (Debrecen) | See Megyeri |
| MG | Russia (areas) | On forged |
| MHP | Mongolia | . |
| Michalsky | Malaya (Straits Settlements) | . |
| Michaux, Albert | Belgium | Auvelais (B), b. 1962, auctioneer, expert 1998–, AIEP 2003–, [FFE7, PE] |
| Michel ('Echt Hugo Michel Apolda'), 2 (1917). Advert. | Europe, Worldwide | Hugo Michel-Triller, Apolda 1910, Weimar 1917 1926, 1866–1944, dealer, cat. publisher/editor. Note |
| Michelsen, Dr. G. | Colombia, South America | Hamburg 1897 |
| Micoulsky, Jean de | . | France, 1901–69, AIEP 1969 |
| Miehe | French PO Levant, Transvaal | Dealer? |
| Mieländer, Gerhard | Estonia | Berlin-Britz 1961, BPP 1968 |
| Miertl. Note (forgeries) | Hungary (Baranya) | Gyula (Julius) M., Pécs 1920, dealer, recogn. expert, [see Flasch 119] |
| Migliavacca, Dr. Giorgio. Note | Italy and areas, Br. Virgin Is., Iran (Persia), etc. | Tortola BVI, auctioneer 1967–, expert 1973– |
| Mihon ('sample, specimen') | Japan (on forged) | See Japan |
| Mikstein, S., mkstn (early mark); Mikstein (in script), 3. Note | Poland | Prof. Stanislaw M., Cracow, 1888–1956, expert c.1930–; forged (the one in script) |
| Mikulski, Zbigniew. Certif. The mark "Mikullski" is a forgery. | Poland, Russia incl. occ.s | St. Gallen (until 1964 Warsaw), b. 1925, expert 1951–, AIEP 1960–, VÖB 1982–, [FFE1 3 (p.178) 5, PE] |
| Milgram, James W., MD | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Miltner, Milos | Czechoslovakia (Scout stamps) | Neuenhof (CH), 1980s, dealer |
| Minarik, Jan | Czechoslovakia | Prague, b. 1881, dealer –1931 |
| Miranda de Mota, José Manuel | Portugal and Colonies | Póvoa de Varzim (PT), b. 1944, expert 1992–, AIEP c.2006–, Inexfip |
| Miró, Léon (Miro) (The trading name of Léon-Pierre Margue) | France and Colonies, Europe | Paris, 1894–c.1975, dealer c. 1930–65, AIEP 1968–75. Note |
| Mirza-Hadi | Iran (Persia) | See Hadi |
| Misteli, Prof. Charles | Switzerland (UN, Int. Org.) | Geneva 1950; collection is in the UN Geneva Postal Museum since 1962 |
| Miszczak, Maciej | Poland | Wroclaw 2000, d. c.2005, Polish Fed. |
| MK | Hungary | [Flasch] |
| MK (in circle) | Czechoslovakia | [P. Hoffmann] |
| mkstn | Poland | See Mikstein |
| Möbs, Theodor. (= Moebs). Photo | Czechoslovakia, Bohemia & Moravia | Frankfurt/Main, 1897–1978, BPP 1958–, AIEP 1954–67 |
| Modry, Dr. Fritz (forged), 2 | Germany East (Bezirk 1948) | Wernigerode (DE), b. 1933, BPP 1991 |
| Moeller, Carl Aage | Denmark, Greenland | See Mřller |
| Moens, Jean-Baptiste | Worldwide | Brussels, 1833–1908, famous dealer, [Tyler] |
| Mogler, Gustav. Certif. | Germany (field post Mi 1–4) | Frankfurt/M., BPP 1984 |
| Möhle, Heinz | German occ. Channel Is. | Hamburg, BPP 1976 |
| Mohrmann, Edgar. Certif. | Scandinavia, Worldwide (pre-1900) | Hamburg 1943, 1897–1964, BPP 1961, AIEP 1954–64 |
| Mojaddedi ('M.S.M.') | Saudi Arabia | Mohammad Sadik Al-Mojaddedi, Djeddah |
| Mokuku ('forged') | Japan | See Japan |
| Moldenhauer jr, Frantz C. | Norway (excl. locals) | Minde (Norway), 1920–1999, dealer, expert c. 1965–90, AIEP 1970–99, BPP 1980 |
| Molesworth, Jack E. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Mřller, Carl Aage (Moller, Moeller). Certif. | Denmark, Schleswig-Holstein, Iceland, Greenland, Danish WI | Ebeltoft 2007–, Greve Strand (DK), b. 1956, expert 1986–, AIEP 2000–, BPP 2001, [FFE4 5, PE] |
| Monclús, Tomás | . | Barcelona, c.1890–c.1965, AIEP 1954–c.56 |
| Mondolfo, Renato. Certif. | Italy and States, Trieste, Czechoslovakia, Europe | Trieste 1950, Rome 1961, 1918–92, AIEP 1954–92 |
| Monge Pineda, Pedro | Spain and Colonies | Barcelona, 1890–1965, dealer, AIEP 1954–65. Note |
| Monkos, Henryk | Poland (groszy ovpt) | Swietochlowice 2008, Polish Fed. |
| Monori, Pavel | Hungary | Czechoslovakia, 1907–85, SCSF expert |
| Monteaux, Georges | France 1900– | Paris, AIEP 1970–90 |
| Moorhouse, Brian. Certif. | South and Central America | Peterborough (GB) 2001, dealer |
| Morandi, Dr. Giancarlo | Italy (1945–) | Cremona, BPP 2003 ended 2007 |
| Morgoulis, Paul | Portugal and Colonies | Paris, c.1900–90, AIEP 1974–90 |
| Moritz, Rud. | Malaya, Worldwide? | Frankfurt, dealer |
| Mosch, Semo | Rumania | Giurgiu pre-WW2, collector's advert. |
| Moschkau, Dr. Alfred | Worldwide | Germany, 1848–1912, expert 1871–77, [Brühl p.481] |
| Moser, Biel, F. (Moser-Räz), 2. Certif., 2 | Switzerland | Fritz Moser-Räz, Biel (Switzerland), 1907–90, AIEP 1958–74 |
| Moskauer Briefmarken-Sammler | Russia incl. Zemstvo and PO Levant, Finland, Poland | Moscow 1897, phil. society |
| Mosonyi | Rumania (Regatul) | Also on forged, [Flasch] |
| Mozek, Dr. Christian. Certif. | German States (Bergedorf; Vineta) | Willich, BPP 2001 |
| Mozian, van ('VM') | Armenia, Azerbaijan, Georgia | New York NY dealers/auctioneers Vahan Mozian Inc? 1901–c.1950, also on forged |
| Mozo ('imitation') | Japan (on forged) | See Japan |
| Mozu | France and Colonies, Portugal | . |
| MP (in circle) | Fiume, Hungary, Yugoslavia (locals) | On forged only, [Flasch 122] |
| Mrdja, Miodrag | Yugoslavia and areas | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Mrnák, J (in script), (+forged, 2). Photo. (Mrnak) | Czechoslovakia | Jan Mrnák, Czechoslovakia, 1903–68, expert 1937–1940s, AIEP 1960–68 |
| MS | Iran | See Sadri |
| MSM | Saudi Arabia | See Mojaddedi |
| Mueller, Edwin | Worldwide | See Müller |
| Muenz, Geo. H. | Palestine, Israel | See Müntz |
| Muis, C. | Netherlands and Colonies | Expert, d. c. 1990, NVPH/NVRH (Dutch Association of Stamp Dealers) |
| Müller (Muller, Mueller) | Iceland | . |
| Muller (Müller, Mueller) | Poland | Also on forged |
| Müller, Edwin (=Mueller). Photo. [See APS Hall of Fame.] | Europe, Austria (pre-1918, incl. PO Levant) | Vienna –1938, New York NY 1950, 1898–1962, expert 1935–, Friedl Expert Comm. NY, AIEP 1956–62 |
| Muller, (Raymond) Frank | Worldwide (air mails) | Les Lilas, Royan (France), 1900–84, AIEP 1958–84 |
| Müller, Hanfried (Muller, Mueller) | Germany (field post Mi 1 and Tunis) | Heidelberg, BPP 1991 |
| Müller, Hans (Muller, Mueller) | Heligoland | Hannover 1897 |
| Müller, Julius (Muller, Mueller) | Germany (1945–6 locals) | Berlin-Spandau, 1901–91? |
| Müller Leobschütz, Dr. Harry (in rectangle or in oval) (Muller) | Germany (Upper Silesia) | Leobschütz (Germany), 1878–1944, often on forged. Note |
| Müller, Milos (Muller, Mueller) | Czechoslovakia | Bratislava, expert 1939–1970s |
| Müller, Rolf Frieder (Muller, Mueller) | Germany East (Bezirk 1948) | Dresden, BPP 1991 |
| Müller–Basel (Muller, Mueller) | . | Dealer Ernest M.? (t.a. Müller & Scheurer), Basel, pre-WW2 |
| Müller-Mark, Ewald (Muller-Mark) | German States | Berlin-Lankwitz 1950, b. 1902 |
| Munk, Dr. Herbert | (Fiume?) | Berlin, Lugano, 1875–1953, editor Kohl's Handbook |
| Müntz, Hans Georg (Muntz, Muentz) | Palestine, Israel | Tel Aviv, 1918–2002, expert 1965–2000, BPP 1978–90, AIEP 1978–2002, [FFE3 4] |
| Murray Payne Ltd | Br. Colonies (George VI) | Axbridge GB, experts Richard (Dickon) Pollard and Stuart Babbington |
| Mza-Hadi | Iran (Persia) | See Mirza-Hadi |
| N (in blue): shade of colour | Belgium and Colonies | See Soeteman, additional marks |
| Najjar, Abed H. | Jordan (Transjordan) | UK. Bibliographical note |
| Nakri, Yakup | Turkey | Istanbul, b. 1962, expert 1995–, AIEP 2003–, [FFE7, PE] |
| Narita, Hiromu | Japan | Japan, ECPM (q.v.) 2001 |
| Narodnyi Komissariat ... | Russia | See HKBT |
| Nasmi | Turkey | . |
| Nauri (in script) | Turkey | See Nouri |
| Navarro Payá, Alfredo | Spain (postal forgeries) | Pontevedra, b. 1925, expert 1970–, AIEP 1978–, [FFE2 5, PE] |
| ND (in blue): genuine imperforate | Belgium and Colonies | See Soeteman, additional marks |
| ND (G.: Neudruck; Nachdruck) | Worldwide | Common mark for reprints |
| Nederl. Bond van Vereen. van Postzegelv. | Netherlands | Amsterdam 1950, (Dutch phil. federation) |
| Nederlandsche Postzegelveiling B.V. Certif. | Worldwide | Amsterdam 1979, auction house |
| Nederlandsche Vereeniging van Postzegelhandelaren. Certif. | Netherlands and Colonies | NVPH, The Hague, dealers' ass. expert committee |
| Neinken, Mortimer L. | USA | New York NY, 1896–1984, PF chairm. |
| Nekvasil, Jiri | Czechoslovakia (postal history) | Czechoslovakia, 1921–88, SCSF |
| Nemvalz, Valdo | Estonia | Johanneshov (Stockholm) 2001, 1922–2003, [Eesti Filatelist #39 p. 226] |
| neprodejné | (Czech for 'unsaleable') | (Strange use on a faultless stamp.) |
| neudruck | Worldwide | German for Reprint (not an exp. mark) |
| Neufeld | Austria | . |
| Neumann, Till. Certif., 2 | German States (Bremen) | Bremen, b. 1972, dealer, BPP 1997–, AIEP 2004–, [FFE8] |
| Newiger, Dieter | Italy, Italian States (Sardinia), Japan (excl. occ.s) | Berlin, b. 1941, BPP 1991 |
| Ney, Christine. Certif. | Saar (Mi 53– incl. Officials) | Saarwellingen, BPP 1991 |
| Ney, Herbert | Saar (Mi 1–52) | Saarwellingen, BPP 2004– |
| NG | Hungary | Also on forged, [Flasch] |
| Nicolaides, N. S. (in script) | Greece | Greece? |
| Nickel, Jürgen | German States (Thurn & Taxis) | Nauen, BPP 1991 |
| Nicklin, John W. | Armenia, Azerbaijan, Georgia | New York NY 1949, dealer, also on forged |
| Nielsen, Gunner Lundegaard | Denmark | Denmark 1969 |
| Nielsen, Lasse. Certif. | Denmark, Europe | Copenhagen 1999, indep. expert. Note |
| Noël, Gilbert | France (cancellations) | Cathou (France), 1920–92, AIEP 1970–92 |
| Norris, Andrew | Malaya | England 2003, BPA expert committee |
| Norsten, Karl-Arne; 'KAN' | Sweden (1920–36) | Stockholm 2008, dealer, active |
| North Western Army | Russia (NW Army) | On forged |
| Nouri, M. | Turkey | Istanbul-Stamboul, pre-WW2, dealer |
| Noury | Syria | Same as Nouri? |
| Novak, D. | Yugoslavia (ovpt. Bosnia and Slovenia) | Giessen, BPP 1991 –2004 |
| Novak, Frantisek | Rumania | Czechoslovakia, 1897–1971, AIEP 1961–71, CSF 1960– |
| Novak, Roland | Germany (Bizone Bauten) | Giessen, BPP 1984 |
| Novakovic, Dr. Brana ('H9' in circle) | Yugoslavia (WW2) | Expert of the Yugoslav Phil. Society c. 1977–90 |
| Novotný, Ladislav (Novotny) | Czechoslovakia, Bohemia & Moravia | Bratislava, 1901–81, SCF 1957– |
| Nussbaum-Bisser, André. Certif. | Switzerland (1843–62) | Basel, 1908–88, BPP 1968, AIEP 1966–88 |
| Nyáry, L. | Hungary | Budapest pre-WW2, ollector's advert. |
| Nykvist, Göran. Certif. Photo | Finland (postal stationery) | Kauniainen, 1932–2006, Finn. Ph. Fed. 1996–2006 |
| Nyman, Arnold | France | Helsinki, 1916–2006, Finn. Phil. Fed. 1981–2004 |
| O | Hungary | See Odor |
| OB (in blue): genuine cancellation | Belgium and Colonies | See Soeteman, additional marks |
| Obermüller, Franz | Sweden | Stockholm, 1906–85, dealer (Kihlströms Frimärkshandel, f. 1933), expert |
| Obermüller-Wilén, Dr. Helena (=Obermueller Wilen). Certif., 2 | Sweden (1855–1919) | Huddinge (SE), b. 1942, expert 1985–, BPP 1994–, AIEP 1996–, [FFE2 3, PE]. Note |
| Odenweller, Robert P. | New Zealand, Samoa (pre-1900), (Australia) Tasmania | Barnardsville NJ, b. 1938, expert 1968–, AIEP 1980–, [FFE3, PE] |
| Odor, Johann/Jean (also 'O') | Hungary (ovpt), Rumania (Regatul), Russia (Armies), Ukraine | A forger, [Flasch 126] |
| Oechsner, Dr. Helmut P. Certif. | Germany (Infla incl. Official, Bavaria Infla, Germania issues), Danzig | Nuremberg, b. 1951, expert 1974–, BPP 1976, AIEP 1991–, [FFE3, PE] |
| Oertel, Dr. | Germany & Col., Heligoland, Albania, Croatia (1941–45) | . |
| Oesch, Herbert. Certif. | Finland | Espoo, 1925–2006, Finn. Phil. Fed. 1981–2006 |
| OFK | Norway | See Oslo Filatelist Klubb |
| Ohrt, Major Paul | German States (Oldenburg, Bremen), Worldwide (reprints) | Düsseldorf 1926, 1867–1944 |
| Ohshima, Masaaki | Japan and areas | Japan, ECPM (q.v.) 2001 |
| Okday, Ismail Hakki | Turkey | (One IHO: Istanbul, 1881–1977) |
| Olamo, Juhani (V.) | Finland, Ecuador | Helsinki, 1940–2010, Finn. Phil. Fed. 1981– 2001 2006–2010, AIEP 1998–2010, [FFE3, PE]. |
| Oldrow, K., Exp. | Ukraine | Collector and expert, [UPNS] |
| Olendski, S., Riga | Ukraine | Riga, [UPNS] |
| Oliva, Bruno Savarese | Italy | See Savarese Oliva, Bruno |
| Oliva, Guglielmo. Certif. | Italy and States, San Marino, Ital. occ. Fiumano-Kupa, German occ. Ljubljana, Fiume, Albania, Spain (pre-1920) | Genoa 1949 1961, 1900–1969, dealer from 1920s, great expert, AIEP 1954–69 |
| Oliveira Pinto, Fernando de | Portugal and areas | Portugal 2005, Inexfip member |
| Oliver, F(rank) H. | Greece, Heligoland, Luxemb., Worldwide | London 1926, b. 1867(66?), dealer, BPA expert |
| Ońate (Onate) | Spain | See Cajal Ońate |
| O'Neill, Fred | Costa Rica | Asoc. Filat. de C. R. 2001 |
| Onofri, Mario | Worldwide (Zeppelin) | Italy, 1895–1968, AIEP 1958–68 |
| Opitz, Walter A. (forged) | German States (Prussia, Saxony, Thurn & Taxis) | Netzschkau 1920 1935 1950, Oberhöch- stadt/Taunus, 1877–1968, BPP 1958–, AIEP 1956–68 |
| Oprysko, Modest M. | Ukraine | Baldwin Place NY 2001, UPNS expert |
| Orbán, Ferenc (Orban) | Hungary | Silkeborg (Denmark), 1924–98, AIEP 1981–84 |
| Orenstein, Jonathan | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Ores, J. | Poland (Cracow 1919) | Also on forged |
| Orestis Vlastos | Greece | See Vlastos |
| Oroszi, K. | Rumania (Regatul), Hungary (Western Hungary) | On genuine, [Flasch] |
| Orth, Dr. F. Alfred | Mongolia (pre-1945), Tibet | Bad Hersfeld (Germany), 1925–93, BPP 1980, AIEP 1983–93 |
| Örvös, János ('JÖ' in triangle) | Hungary (esp. Debrecen I) | On genuine, [Flasch] |
| Oslo Filatelist Klub (OFK) | Norway | Oslo 1950 |
| Osper, Horst | Denmark, Danish WI, Faroes, Greenland, German occ. Sudetians | Borken (later Thailand), BPP 1991–2005 |
| Ossa, Mikko (in manuscript) | Finland | Kokemäki (formerly of Turku), b. 1939, Finn. Phil. Fed. 1981–93. Note |
| OTW | Rumania (Regatul) | On genuine, [Flasch] |
| P, Cyrillic, in circle) | Ukraine 1918 (also 1992 ovpt) | See Pos, Gregory |
| Paaskesen, Erik E(gtved) | Denmark, Faroes, Danish West Indies | Brussels, 1949–2000, dealer, AIEP 1991–2000 |
| Pacreu, E. | Spain | Barcelona, dealer |
| Paetow, Hans-Hermann | German occ.s Bohemia & Moravia and Poland (GG) | Bremen, b. 1931, expert 1990–, BPP 1996–2008, AIEP 2003–, [FFE7, PE] |
| Pagnoncelli, Ernesto. Certif. | Italy | Rome 1970s, dealer |
| Pahlman, Heikki | Finland (pre-philately) | Tampere, d. 2006, Finn. Phil. Fed. 1996–2006 |
| PAK (lightly in pencil) | Confederate States | See Kaufmann, Patricia A. |
| Pákozdi, László (Pakozdi) | Hungary | Hungary, [Flasch 166] |
| Palacek, W. | Czechoslovakia | Prague |
| Palazolo, Jerry S. | Confederate States | USA 2000 |
| Pape, Heinz. Note (forged) | Hungary, Fiume, Rumania (Regatul), Yugoslavia (SHS) | Used by Géza Tarján, dealer, forger, [Tyler, Flasch 130] |
| Pape, Herbert | Japan (excl. occ.s) | Erfurt, 1921–96, BPP 1991 |
| Pappadopulo (in boxed P), SP (in circle). Stephan Aristol P. | Russia (Siberia), China | Vladivostok c. 1918–22, Shanghai 1923–48, 1880–1953 (b. 1885?), dealer. Note |
| Paprstein, Vladimir | Czechoslovakia | Czechoslovakia, d. 1958, USCF expert |
| Papuçcuoglu, Bülent (Papuccuoglu) | Turkey | Turkish Phil. Fed. 2001. |
| Pardo, Flavio | Italy, Trieste | See San Giusto, Filatelia |
| Pascal ? | French Colonies | . |
| Pascanu, Leonard. Photo | Rumania (excl. Moldavia & Wallachia) | Bucuresti, b. 1952, expert 1985–, AIEP 1998–, [FFE3, PE] |
| Passer, Adolf | Turkey, Bosnia & Herzegovina | Prague, 1865–1938 |
| Pataj Sándor | Hungary (Western Hungary) | An owner's mark, [Flasch] |
| Pátkai (Patkai) | Fiume | On genuine, [Flasch] |
| Paul, Siegfried | Germany East (Mi 182–241 and DDR) | Berlin, BPP 1995– |
| Pauligk, Dr. Karl. Certif. | German New Guinea (excl. GRI), German PO Morocco | Freiberg, BPP 1991 |
| Pavoille (boxed, three lines: PA VOI LLE), also: Pavoille Paris (two lines) | France and Colonies, Hungary, Belgium | Emile P., Paris 1926, dealer, also on forged, [Flasch] |
| Payá (Paya) | Spain | See Navarro Payá |
| Pazout, Pavel | Czechoslovakia (1945–) | Praha, dealer (Profil), SCF 2001 |
| Pearson, Patrick C. (Works as member of committee.) | Ceylon, Hong Kong, Iraq, W. Australia | London, b. 1930, expert 1965–, AIEP 1990–, [FFE1 3 5 6, PE] |
| Peinelt | Germany (incl. all areas) | Germany |
| Pelander, Carl E(inar) | Finland, Iceland, Scandinavia | New York NY, 1894–1966, dealer. Note |
| Pelczar, Piotr | Poland | Koszalin 2000 Leba 2008, Polish Fed. |
| Peleeheid Paris | Brazil | Paris, dealer? |
| Peltonen, Lauri ('LaPe') | Finland | Hanko (Finland), dealer, in use 1930s |
| Pemberton, Edward L(oines) | Worldwide | England, 1844–78. |
| Pemberton, Percival Loines | Greece, Worldwide | London, 1875–1949, BPA expert, son of E.L. |
| Penning, Dr. Hans-Karl. Photo (3rd fr. left, at right Firma Köhler repr.), 2 | Germany (1945–6 certain locals) | Bornheim, b. 1941, BPP 1981–, [FFE6] |
| Peoples, Dennis | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Perrain, A. R. | Russia (areas), Hungary (on forged ovpt) | France, dealer, [Flasch 137] |
| Perzynski, Maciej S. | . | Poland, 1907–77, AIEP 1961–77 |
| PESA | Worldwide | Philatelic Expertizing Service of America Inc., 1984 (12 mo.), APS, ASDA, GPS |
| Peschl, Eduard (forged; the first), 2 | Germany (Germania issues, 1915–45 incl. Infla) | Passau 1950, 1903–99, BPP 1961, AIEP 1954–95 |
| Peters, Herm. | German States (Mecklenburg-Schwerin) | Bremen 1897 |
| Peters, Markus W. E. | Albania | Göppingen-Hohenstaufen, b. 1968, expert 1994–, AIEP 2002–, [FFE6, PE] |
| Peters, Oskar Erich, 'O.E.P.', trident | Ukraine | Rabenstein 1950, Chemnitz 1920 1961, b. 1884, 1920s expert, UPV |
| Petersen, Dr. E. N. (forged) | Memel | Neunkirchen-Seelscheid, BPP 1976 |
| Petric, Nicola | Yugoslavia, Fiume, Hungary (Baranya) | Zagreb 1999. Also on forged |
| Petriuk, Stefan | Poland incl. locals and Polish Corps | Langballigholz, BPP 1991, Polish Fed. |
| Petrocelli, David | France | New York NY 2001 |
| Petrovic, Bogdan | Yugoslavia and areas | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Petry, Claus | Germany (Mi 31–52, Field Post 17) | Hamburg, b. 1965, BPP 1996 |
| Pettersson, Olle | Sweden | Stockholm, dealer |
| Petzold, Volkmar | Germany East (Bezirk 1948) | Dresden, DDR expert 1985–1990, BPP 1990–2005 |
| PF. Certif. | USA, Central America, South America, Worldwide | Philatelic Foundation, NY, 1945–, [FFE2 (p.173) 3, PE]. Note |
| Pfä. [German: Postfälschung] | Worldwide, especially German area | On postal forgeries in addition to name |
| Pfaff, C. | German states | Hannover 1897 |
| Pfalz, Dr. R. | . | VÖB honorary member |
| Pfeiffer, Detlef | German occ. Poland (GG), Bohemia-M. | Gäufelden-Öschelbronn, BPP 2001 |
| Pfenninger, Franz (forged, another forged). Certif. | Germany incl. States (esp. Bavaria) and Colonies, France, French Colonies (–1886), Europe (–1900), Egypt, Sudan, Japan, Worldwide (–1900) | Munich 1950, 1905–86, BPP 1958–, AIEP 1954–86 |
| PFSA | South Africa, Worldwide | Philatelic Federation of South Africa |
| PhA USSR (within an 'S') | Russia (and areas), Soviet Union | See Soviet Philatelic Association |
| PhB (cf. ürményi) | Hungary (Debrecen) | See Banater Philatelist |
| Philatelia Krakow | Poland (Cracow 1919), Ukraine | Cracow pre-WW2, dealers. Mostly on forged [Stallberg] |
| Philatelia Subotica, 2 | Hungary, Yugoslavia (SHS) | Szabadka, dealer, on genuine, [Flasch] |
| Philatelic Museum | Japan and occ.s, Manchukuo | Tokyo 2005, Expert Committee. Note |
| Philatella Dortmund | Ukraine | Germany, also on forged |
| Phillips, David G. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Pickenpack, Werner (forged, forged) | Germany (field post and occ. France & Ukraine) | Hamburg, BPP 1961 |
| Piechotte, Max ('P.X.M.') | Germany and States | Berlin, dealer or collector mark |
| Piekut, Janusz Zbigniew | Poland | Warsaw 2000, Polish Fed. –c.2005 |
| Pieper, Dr. Hans | Worldwide (telegraph) | Kirchheim, BPP 1976 |
| Pietilä, Juhani | Finland (postal stationery) | Turku, b. 1941, Finn. Phil. Fed. 1990– |
| Pietz, Friedrich | German States (Bavaria pre-adh.) | Nuremberg, BPP 2001 |
| Pigeron, Xavier | France | Paris 2002, dealer 1964– |
| Pileur, Jacques Le | France | Paris 1943, 1880–1969. Note |
| Piller, Stanley M. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Pimian, I. V. (?) | Luxembourg | . |
| Pinchot, S. | Worldwide | 1980s |
| Pineda, Pedro Monge | Spain and Colonies | See Monge, Pedro Pineda |
| Pirl, Dr. P. H., 2 (Paul H. Pirl) | Russia, Heligoland, Iran (Persia), Japan, Transvaal, Worldwide | Berlin-Charlottenburg 1935, 1873–1947, expert since very early 1900 |
| Pit, D. M. (in square) | Yugoslavia | . |
| Pitkänen (Pitkanen), Risto | Finland (old cancellations only) | Kuopio, Finn. Phil. Fed. 2007– |
| Pittermann, Pavel. Photo | Czechoslovakia, Bohemia & Moravia, Slovakia. Also on forged | Prague, b. 1942, expert 1984–, CSF exp. chairman –2004, AIEP 1996–, [FFE2 3, PE] |
| PJB (Postás Jóléti Bizottság) | Hungary (coronation of Charles IV stamps) | Post Charity Committee; on front of stamp |
| Plamsch, Adolf | Central Lithuania, Russia (Wenden) | Grodno 1935, b. 1866 |
| PLC | Armenia, Azerbaijan, Georgia | Also on forged. |
| Plško, Štefan (Plsko) | Denmark, Danish WI | Detva (Slovakia), SCF 2001 |
| PM (or MP?, monogram) | Samoa, Australia (Queensland) | On genuine and on forged |
| PN (in oval) | Fiume, Hungary (ovpt) | On forged, [Flasch] |
| Poburenny, Stefan, 'PS'. Note | Western Ukraine, Russia etc. | PO civil servant in W. Ukraine, on forged |
| Podlog (etc. beginning with 'Pod...') | (in Cyrillic letters) | Russian for 'Forgery' |
| Pofis, 2, Pofis-Beneš | Czechoslovakia, Bohemia & Moravia | See Beneš |
| Pohl, Waldemar (Woldemar?) | Russia (incl. Armies and PO abroad), Estonia, Ukraine, Armenia (excl. Z- & monogr. ovpt), Azerbaijan, Georgia, Batum | Bamberg 1950, 1903–69, BPP 1961, generally reliable, also on forged |
| Pollard, Richard (Dickon) | Br. Colonies (George VI) | England 2001, dealer (see Murray Payne), BPA expert committee member |
| Pollmer, Dr. Gottfried | Germany (1945 Meissen local) | Meissen, BPP 1991 |
| Ponsio, Ilmari ('IP') | Finland | Tampere, dealer, in use 1930s |
| Poon, Kam Leung. Photo. (Works as member of committee.) | China incl. all areas, Hong Kong, Macau, Taiwan (Formosa) | Hong Kong, b. 1936, expert 1995–, AIEP 2000–, [FFE4, PE] |
| Popa, S. Andreas | Danzig | Schleswig 1950 |
| Popielewski, Lech | Poland | Torun 2000, d. c.2005, Polish Fed. |
| Poppers | Ukraine | . |
| Popoff | Ukraine | Kyiv, later Moscow, collector |
| Pordo, Friedrich | Brazil | Rio de Janeiro 1897 |
| Pos, Gregory (Cyrillic 'P' in circle) | Ukraine 1918 (also 1992 ovpt) | London, expert since 1970s |
| Poser, Dr. Richard | Italian States (Papal States and Romagna) | Braunschweig, BPP 1961 |
| posthorn | Cechoslovakia | See Zampach |
| Pothion, Jean-Jacques | France (cancellations, pre-adh.) | Paris, 1918–87, AIEP 1970–82 |
| Pothion, V. (Vincent) | France | Paris, b. 1950, dealer, [FFE2]. Note |
| Pötzsch | Germany (1945–6 certain locals) | . |
| Poula * Paris (in circle) | Europe, Hungary etc. | René Poulain, Paris, b. 1887, dealer. Note |
| Poulie, Jan | Netherlands | Amsterdam 1949 1961, Aubonne (Switzerland) 1978, 1907–81, AIEP 1960–81. Note |
| Powell, Peter W. W. | Confederate States | USA 2000 |
| Prasil, Vaclav | Czechoslovakia | Prague, dealer |
| Prehnalek, Erwin | Hungary, Czechoslovakia | Also on forged, [Flasch] |
| Prendushi, Zef ('ZP' boxed). Letterh. | Albania, Epirus, Turkey | Skutari, dealer c. 1928–42, also on forged |
| President | Japanese occ. Burma | On forged only, [Richard Warren] |
| PRHO | Russia (Siberia) | On forged |
| Pritula, V. Vsevolod | Russia (pre-1917), Soviet Union | Moscow 2001, b. 1937, AIEP 1992–99, frequently on forged |
| Prof. Vin (in Russian script) | Russia | See Vinterstern |
| Pröschold, Horst K. W. (Proschold, Proeschold) | German States (Saxony), Great Britain, Ireland, Malta, Cyprus, Gibraltar | Frankfurt/M., 1922–89, BPP 1976, AIEP 1975–89 |
| Protivensky, Miloslav | Czechoslovakia | Czechoslovakia, 1911–70, SCF |
| Provera, Pietro (green sprucetree) | Lombardy-Venetia, Austria | Switzerland (ex Italy), collector. Note |
| Provinsky, Dr. Peter | New Guinea, Mariana Is. and Marshall Is. (all German), German PO Morocco | Berlin, BPP 2001 |
| Prüfzeichen falsch | German area (mainly) | German for "Forged exp. mark" |
| Prüss, Max (Pruss, Pruess) | Germany (Zeppelin) | Neu-Isenburg 1950 |
| PS | Togo (Fr.-Eng. occup.) | On stamp w. forged (laser?) ovp (eBay) |
| PS | Ukraine | See Shchapov |
| PSE. Certif., 2 | USA, BNA, Br. Colonies | Professional Stamp Experts, Florida US, f. 1987, cf. Amer. Phil. Feb. 1998 |
| Ptacovsky, Klement | Czechoslovakia, Slovakia | Bratislava, 1940s, cf. Slovensky F. |
| Pujalto Madrid (?) | South America | Dealer |
| Puloaas, Gunnar ('GP') | Estonia | Tallinn, expert c. 1950–95 |
| Püschel, A. | German states | Berlin 1897 |
| Puschmann, Fritz. Certif. | Austria incl. all areas | Vienna 2001, dealer (Öfila), VÖB |
| PVK | Bulgaria | See P. V. Karaivanoff |
| PXM | Germany, German states | See Max Piechotte |
| Pytlícek, Ludvík | Czechoslovakia | Semily (Cz.) 2000, b. 1943, collector, in 2003 accused of selling forgeries |
| Pyznar, Richard ('RP') | Germany | USA (East coast), dealer |
| Quast, Albert | Chile, Mexico, Nicaragua; (all pre-1900) | Hamburg, BPP 1968 |
| R (in blue): genuine reprint | Belgium and Colonies | See Soeteman, additional marks |
| R!S! | Armenia, Azerbaijan, Georgia | Also on forged |
| R... ? | Russia (Siberia) | . |
| Rachmanow, Wladimir (von) | Switzerland (Cantons), Poland | Warsaw 1926, Bayside NY 1950, b. 1886 |
| Racic | Yugoslavia (SHS) | Croatia, on genuine, [Flasch] |
| Radanovic, Radenko R. | Yugoslavia and areas | Banja Luka 2004, Phil. Assoc. Serbia M. |
| Radicevic, Djordje | Yugoslavia and areas | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Rafay (in oval, stamped on hinge) | Hungary | [Flasch] |
| Raftopulo, Spiro (Raftopoulos) | Greece | Greece, 1930s. Cf. Raphtopoulos |
| Ragasztó | Hungary etc. | Hungarian for 'forged' |
| Ragatz, Dr. Lowell | Worldwide (forgery researcher) | Madison Wis. 1926, 1897–1978, dealer (Reliance Stamp Co. t.a. George van den Berg) |
| Rainer, H. | . | VÖB honorary member |
| Rajits, N. P. | Albania | . |
| Raphtopoulos, A. | Greece | Greece, until 1970s. Cf. Raftopulo |
| Rapp, Peter | Worldwide | Wil (CH), auctioneer 1970–, member of BPB, q.v. |
| Rappaporte | German Colonies | . |
| Raritan Stamps Inc. | Russia, Soviet Union | Dayton NJ 2006, dealers |
| Rasch | Mexico | . |
| Rasche, Walter | German States (Hannover and Prussia) | Bad Neundorf 1950, Hannover, BPP 1961 |
| Rathausky, Josef | Greece | Czechoslovakia, 1901–83, CSF |
| Rathje, Eigil | Denmark | Copenhagen, 1901–86, AIEP 1954–c.56 |
| Rauh | Argentina, Uruguay | . |
| Ray, Samuel | Palestine, China | Chicago, 1912–92, AIEP 1969–92 |
| Raybaudi-Massilia, Dr. Luigi | Italy and States | Rome 1943, 1913–2003, dealer, AIEP 1954–2002 |
| Raybaudi-Massilia, Maurizio | Italy and States | Rome 2002, b. 1937, indep. expert, AIEP 1983–99. Note |
| RB | Yugoslavia (SHS) | Perhaps Ruggero Benuzzi (q.v.), [Flasch] |
| RD | Belgium | See Delapierre |
| RDM | Central America | See Duron Membreno |
| Reach, Zikmund | Czechoslovakia | Prague, 1859–1935, dealer |
| Refky, M. A. | Mongolia | Seen exclusively on forgeries. |
| Rehfeld | Germany East | . |
| Rehn, Erhard; 'Rehn Hall' | Germany (1945 Saxony locals), Germany East (Mi 212–, prev. also Bezirk 1948) | Munich, BPP 1961 |
| Reine, G. | French Colonies, Hungary, Albania | Germany?, [Flasch] |
| Reinhardt, Werner | Liechtenstein | Chur (CH), BPP 1984. |
| Reinhardt, Theodor | German States (Wurttemberg) | Stuttgart 1897 |
| Reinheimer, A. | German States | Frankfurt 1897 |
| Reinikainen, Heikki. Certif. | Finland (1875) | Helsinki, b. 1937, Finn. Phil. Fed. 1996– |
| Reinoso, Juan | Costa Rica | San José, dealer, Asoc. Filat. C. R. 2001 |
| Rellstab, Emil. Certif. | Switzerland (1843–) | Mönchaltorf (CH), 1928–2006, expert 1972–2006, BPP 1976, AIEP 1981–2006, SBPV until c. 2002, [FFE1 2 3 5, PE] |
| Renard, Nicholas | Worldwide (pre-1900) | Mürnau 1950 |
| Rend, Dr. Ferenc | Hungary, Rumania (Regatul) | Budapest, [Flasch 141] |
| Rendon, Alex (Alejandro) (Works as member of committee.) | USA, Bolivia, Colombia | New York NY, b. 1940, expert 1970–, AIEP 1982–, [FFE5, PE] |
| Renggli, Hans-Peter. Certif. | Switzerland. Note | Reinach BL (CH) 2001, SBPV –2002 |
| Renon | Spain | . |
| Rep. (boxed) | Worldwide | The stamp has been repaired |
| Replik (printed; easily erased) | Worldwide | On back of Peter Winter forgeries |
| Ressel, Oskar | Worldwide | Berlin 1943, dealer |
| Reum, Dr. Kurt | German States (Thurn & Taxis) | Meiningen (DDR), 1913–83, AIEP 1972–83 |
| Reuterskiöld, Baron Axel de | Switzerland, Great Britain and Colonies | Lausanne, 1860–1937, philatelist |
| Revaler Philatelisten Verein e.V. | Estonia | Tallinn 1936, expert F. Klemann. Note |
| Revest, A. | Armenia, Azerbaijan, Georgia | Also on forged |
| RF (in circle, with four dots) | Hungary | On genuine, [Flasch] |
| Riba Praha | Czechoslovakia | Prague, dealer |
| Riccio, Dr. Dominick | Carpatho-Ukraine | New York NY 2001, UPNS expert |
| Richardson F (in circle; F= forgery) | Worldwide (forgeries only) | David R., GB, a forgery collector's mark |
| Richter, Alexander | Bulgaria | Ruse (BG) 1897 |
| Richter, Georg (in script or in block), 2 | Worldwide | Berlin, 17.11.1874–22.3.1960, expert c. 1930–60, frequently also on forged. Note |
| Richter, H. | Australia | . |
| Richter, Heinzgeorg. Certif. | Great Britain, Cape of Good Hope, Cyprus, Gibraltar, Ireland, Malta, Mauritius | Wöllstadt (Germany) 1998, independent expert. Note |
| Richter, L. | Hungary | Budapest 1897 |
| Richter, Walt(h)er | German occ.s (Poland, Ober Ost and Etapp. West) | Heidelberg 1950 1961, 1877–1959 |
| Ricotti, Umberto | Fiume | Fiume, [Flasch] |
| Rieger, Dr. Bohus | Europe (pre-1900) | Czechoslovakia, 1895–1977 |
| Rieger, F. | Yugoslavia | Berlin-Reinickendorf 1961 |
| Riep, Oscar | Russia and areas | Berlin, d. 1928, dealer |
| Rijxmann | Germany (1945 locals) | . |
| Ringström, Sigurd (Ringstrom) | Worldwide (locals), Iceland | Trelleborg (Sweden), 1908–92, philatelist, author |
| Rinsch, Heinrich | German States (Bremen), Heligoland, Italy (Meran), German occ. Libau, Poland, Russia, Soviet Union | Essen-Stadtwald 1950, 1890–c.1975, BPP 1961, AIEP 1954–75 |
| Risigari, L. | Italy and States | Rudolstadt 1897 |
| Rismondo, Tilo. Certif. | German States (Saxony), Austria (pre-1918) | Chemnitz, b. 1938, BPP 1991, VÖB |
| Ristic, Jovan | Yugoslavia and areas | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Ritter, Franz | Germany (Infla) | Munich, BPP 1958– |
| Ritter, Hermann | Switzerland, Heligoland, Turkey, Germany and States (–1944), German Colonies, Danzig, Memel, Saar, Liechtenstein | Zurich 1949, official expert 1949 |
| Rivičre | Fr. Colonies | France?, dealer? |
| Rjaci | Fiume | On genuine, [Flasch] |
| RJC (also in oval). Note | Russia (areas), etc. | See Ceresa; in use pre-1970 |
| RJT (in manuscript) | Saudi Arabia | See Thoden |
| Robert | Germany (field post WW2) | Germany? |
| Robert, J. B. | Netherlands | The Hague 1897 |
| Roberts, C. W. (Cecil William), also in script, 'CWR' | Russia (areas), Ukraine | Great Britain, 1899–1974, AIEP 1959–74, [UPNS] |
| Robertson, Peter A. | . | USA, b. 1943, AIEP 1987–94 |
| Robles, Roberto | Guatemala | Quezaltenango, dealer |
| Robineau, F. A. | France (and areas), Saar, Great Britain | France 1966 1990 |
| Robineau, Jacques. Certif., 2 (the company) | France (Ballons Montés) | Paris 1949, 1913–91, dealer, AIEP 1970–91 |
| Rocha, Carlos Hernández | Uruguay | Federación Urugaya de Filatelia |
| Rockling, Dr. S. (Romeko) | Russia, Ukraine, Hungary | See Romeko |
| Rodehuser, F. H. | German occ. Kurland | Dealer? Seen on probably genuine. |
| Rodendorf, Karl (Cyrillic 'KP') | Ukraine | Moscow, a forger, always on his forged |
| Rodewald, Adolf ('A.R.') | Germany East (1945 locals Grabow) | . |
| Rodin, Igor | Russia (astrophilately) | Moscow, b. 1962, expert 1994–, AIEP c.2006– |
| Rohr (two, one in script) | Germany, German Colonies, French PO Levant | . |
| Roig, A., Barcelona, 2 (Catalan: Antoni Roig) | Spain, Europe, Worldwide. Seen on forged eg. Cracow 1919 and Japanese stamps | Dr. Antonio Roig Soler, Barcelona 1943, 1881–1970, dealer, AIEP 1954–70, his mark 2 has been forged. Note |
| Roig, Ramón | Spain, Russia, France | COMEX 1996 |
| Romeko Paris. Certif. | Russia (areas), Ukraine, Hungary (on forged ovpt) | Dr. Serge Rockling (Rochlin, Rocklin), Paris, 1893–1975, dealer t.a. Maison Romeko 1921–c.65, AIEP 1968–75 |
| Rommel, Dr. O. | German States (Bergedorf, Lubeck), Peru | Leipzig 1897 |
| Rommerskirchen, Dr. Helmut | Croatia; German occ.s Albania, Channel Is. and Soviet Union | Krefeld, BPP 1968 |
| Roosevelt, Franklin D. | USA | Item that belonged to President R. |
| Roots, J. (Jaan) | Estonia | Oslo 2004, EFL 2004–. Note |
| Rosauer, L. | Portugal | . |
| Rose, Hans | Germany (Wohnungsbau) | Kitzingen, BPP 1968 |
| Rosen, Bill | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Rosenberg, Ad. | Heligoland | Frankfurt 1897 |
| Rosenberg Jr., B. | Rumania | Bucarest 1897 |
| Rosende, Dr. Alberto | Cuba | . |
| Rosende, Dr. Roberto | Cuba | Yonkers NY, b. 1935, AIEP 1981–2002 |
| Rosenius (by pencil) | Finland (pre-1875 covers) | Dr. Carl, Helsinki 1961. Famous collector. |
| Rosenkrantz, Albin | German States (Schleswig-Holstein) | Kiel, 1851–1913 |
| Rosselevitch, Anatoly ('Ross, 2') | Armenia, Azerbaijan, Georgia, Russia (areas) | Brussels 1949, later USA, d. c. 1980, dealer |
| Roth, Douglas | Cape of Good Hope | Newlands (South Africa), 1906–90, AIEP 1970–80 |
| Rothe | Costa Rica | . |
| Roumet, Alexandre. Certif. | France and Colonies | Paris 2002, cf. below |
| Roumet Exp., 2 (Roumet in circle) | France and Colonies | Alexandre and Philippe R., Paris 2000, dealers f. 1896 by Octave R. |
| Roumet, Octave | France and Colonies, Worldwide | Paris 1926, dealer |
| Roumet, Philippe | France and Colonies | Paris, b. 1921, dealer (Maison Roumet), AIEP 1954–c.56 |
| Roussos | Greece | . |
| Rowell, Milo David ('MDR', or sign.) | Japanese occ. (all territories) | USA, 1926–92, US Colonel, ISJP, APS |
| RP | Germany | See Pyznar |
| RPS, RPSL Certif., 2, 1917. Note | Br. Colonies, Worldwide | Royal Philatelic Society London, expert comm. 1894–, [FFE2 p.173; Brühl p.482, PE] |
| RPSNZ | New Zealand, Br. Pacific Is. | Royal Philatelic Society of New Zealand, exp. comm. f. 1952, [PE] |
| RPS of Victoria. Certif. | Australia, New Zealand, Br. Pacific Is. | Royal Philatelic Society of Victoria, exp. comm. f. 1949, [PE]. Note |
| RS (in circle) | Ukraine | See SR |
| Rucins, A. G. (Arvid G.). Rucins | Estonia, Latvia | Latvia?, active c. 1950–70 |
| Rudminski Odessa | Ukraine | Odesa, dealer |
| Rudolph, Hans | Finland (incl. Aunus etc.) | Cossebaude (Germany), BPP 1991 |
| Ruggiero, Michael Eugene (Works as member of committee.) | Japan, Korea | Staten Island NY, b. 1928, expert 1974–, AIEP 2002–c.06, ISJP, [FFE6, PE] |
| Rühland, Gustav (Ruehland) | German States (Brunswick 1864) | Braunschweig, 1859–1932 |
| Ruidiaz (Beremundo Ruidiaz Alfonso) | Central America | Mexico DF 1949, dealer, forged |
| Ruiz, Alfonso | Spain | Madrid pre-WW2, dealer's advert. |
| Rummel, Wilhelm | German States (Bremen), German occ. Rumania | Bremen 1935 1950, 1885–1959 |
| Rungas, Wolf | Germany (field post Mi 1–4, Inselpost) | Munich, d. 1981, BPP 1961 |
| Rupp, Bruno. Certif. | Switzerland | Liechtenstein, b. 1912, SBPV (now retired), AIEP 1970–74 |
| Rusu-Arad | Rumania (Regatul) | On genuine, [Flasch] |
| Ruthphil | Ukraine | Dealers? |
| Rutkowski (also in script) | Ukraine | Ukraine, later Bulgaria, collector, main distributor of the so-called Kherson local |
| Ryblewski, Jan | Poland | Kraków 2000, b. 1919 d. c.2005, Polish Fed., AIEP 1972–2002 |