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NAMES A–FSkip-links for this page: scroll to B
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F . Copyright © 2025 G. Kock |
| Signature/name | Expertizing area | Details (b. born, d. dead, f. founded) |
| A (in blue): correct postage | Belgium and Colonies (postal history) | See Soeteman, additional marks |
| A (resembling CA, in circle) | Ukraine | See Breul |
| A under crown | Czechoslovakia | See Sula |
| A3.boka (Az. Voka) | Russia (Armies and areas), Azerbaijan | See Az.Voka |
| Abonyi, Jenö | Hungary, Fiume (forged) | Budapest 1949, dealer, [Flasch] |
| Abraham | Hungary (Szeged etc.) | [Flasch] |
| Abt, Walter | Switzerland incl. hotel posts | Thun (CH), Basel, BPP 1980, SBPV |
| AC (monogram) | Czechoslovakia | See Cerny, Antonín |
| AC (or CA, in circle) | Poland (Cracow 1919) | See CA |
| ÁcsJenö (Acs). Note | Hungary, Fiume | Dr. Jenö Ács, 1920s, forged, [Flasch] |
| Ad. Glaettli, Zürich | British East Africa | See Glaettli |
| Adam & Söhne (= sons) | Germany | Germany, dealers |
| Adamczyk, Janusz | Poland | Kraków 2000, Polish Fed. |
| Adgey-Edgar, Capt. Walter Herbert | Japanese occ.s Malaya and Burma, Manchukuo, Tibet | Great Britain, 1887–1977, philatelist. Note. |
| Adler, Arthur | Germany (Bizone incl. Bauten) | Grebendorf, BPP 1961 |
| AE | Germany, Turkey, Worldwide | See Arthur Ernst Glasewald |
| AF (in manuscript) | Finland? | See Freymuth |
| AG (in manuscript) | Finland, Russia, Baltics | See Fabergé |
| Agadjan, F. | Caucasia, Russia | See Arcadjan |
| Agaogullari, Ziya | Turkey | Turkey, Turkish Phil. Fed. 2001 |
| AgF | Finland, Russia, Baltics | See Fabergé |
| Aginelli, E., Torino, 2 | Italian States | See Asinelli |
| Aguirre, Eduardo (in square) | Latin America | Mexico DF 1926 1949, dealer, forged |
| AHL (in 2 lines in circular box) | Germany (Upper Silesia) | A suspect mark |
| AIEP | Worldwide | Association Internationale des Experts en Philatélie, Zurich, f. 1954 |
| Aigner, Dr. | . | VÖB a.o. member |
| Aisslinger, Horst | Worldwide (air mails) | Aalen, 1925–92, BPP 1976, AIEP 79–92 |
| AJ | Austria (1945 overprints on Germany) | . |
| AK (upper case script) | Turkey | See Kicukis |
| AK (in circle) | Ukraine | See Koliski |
| Aksamit, Pavel | Czechoslovakia | Czech Rep., b. 1942, SCF 2004– |
| Alcalde, P. | Spain (Civil War) | . |
| Alcuri, Paul J., 2 (pencil). Certif. | Worldwide (pre-1900) | Canterbury (GB), dealer 1945– |
| AL (or LA) (monogram) | Ukraine | . |
| ALL | Russia (areas), Ukraine | On forged |
| Allegeershecque, André le Jeune d' | Belgium | Brussels, 1922–99, [Soeteman] |
| Allen, Thomas ('TA', 'T. Allen') | Br. Colonies | London 1926, 1895–1984, dealers. |
| Althen, Manfred | Germany (Allenstein) | Bad Vilbel, BPP 1991 |
| Altmann | German States | On forged, forged |
| Altstädter, Dr. | Yugoslavia (SHS) | [Flasch] |
| Alvarez, Ricardo | Costa Rica, Central America | San José, 1912–2003, dealer, AIEP 1982–2000, As Fil de CR 2001 |
| Alver, Heldur | Estonia | Sweden, in use c. 1970–80 |
| Amano, Yasuharu | Japan and areas | Japan, ECPM (q.v.) 2001 |
| Ambroz, O. | Yugoslavia (SHS) | Eszék (Hungary), a forger, [Flasch] |
| Amend, Günther | Spain and Colonies, German States (Brunswick) | Hamburg, BPP 1961 |
| Ames, Norman | Russia, Soviet Union | Swindon 2001, Br. Soc. of Russian Phil. |
| Anbeisser, J. H. | Worldwide | Cologne 1897 |
| Andersen, Hans | German States (Schleswig-Holstein); German occ. Kurland | Flensburg 1950, 1882–1965, BPP 1961 |
| Anderson, Spencer ('S.A.') | USA | USA |
| Anderssen, Dr. Justus | Norway | Norway 1929, up to 1950s |
| Anduze, Garanti: P. | Latin America | Paul Anduze; forged |
| Angelides, Antoine | Turkey | Istanbul, pre-WW2, dealer |
| Angeloglu (Angeloglous), E. L. ('ela'). Picture. Advert. | Egypt, Saudi Arabia, etc. | Cairo 1905 1926 1943, b. 1878, dealer. Note |
| Anon | Hungary | Alias Szabó, on forged, [Flasch] |
| Antoniazzo, V. (Vincenzo?) | Fiume | [Flasch] |
| Antoniu, Jan S. | . | Rumania, 1905–87, AIEP 1967–76 |
| APAI (successor of APA) | Saudi Arabia | See Arabian Philatelic Assoc. Int. |
| APEX (formerly APES). Certif. | USA, BNA, Worldwide | American Philatelic Expertizing Service (APS and ASDA), 1903–, [PE]. Note |
| apitz (forged) | Germany | See Opitz |
| appadopulo (in boxed P) | Russia (Siberia) | See Pappadopulo |
| APS | Worldwide | American Philatelic Society, see APEX |
| AR | Germany East (1945 locals Grabow) | See Rodewald |
| Arabian Philatelic Assoc. Int. Certif. | Saudi Arabia | APAI, expertising service. Cf. King. |
| Arbeit, Marcel | Czechoslovakia (postal stationery) | Czech Rep., SCF 2005– |
| Arcadjan (or Agadjan(ian)), F. | Armenia, Azerbaijan, Georgia, Russia | Paris?, on forged |
| Arctander | Denmark | . |
| Arechavala, Graciliano | . | Madrid, 1907–57, AIEP 1954–57 |
| Arenz, Dr. Hartmut | Germany (1945–6 locals) | Cologne, BPP (1991) until 2005 |
| ARGE (ArGe Kontrollrat) | Germany (Allied occ. 1946–48 colours) | See Bernhöft and Hohmann resp. |
| Argyropoulos, Alexander G. (A. ΑΡΓΥΡΟΠΟΥΛΟΣ). Photo | Greece, Epirus, Ikaria, Ionian Is. | Athens 1949, 1883–1962, dealer |
| Arikan, Arman. Photo | Turkey | Istanbul, dealer (Kamer Arikan), Turkish Phil. Fed. 2001 |
| Arkel, .. W. von, Bremen, 2 | German States, Colonies and PO abroad, Ukraine | Bremen, dealer |
| Arnold, Alwin | Ukraine | Berlin-Wilmersdorf, b. 1878, UPV, BPP 1935, [UPNS] |
| Arsman, N. Cengiz. Photo | Turkey | Turkey, b. 1940, Turkish Phil. Fed. 2001 |
| AS (monogram) | Ukraine | See Stohmann |
| ASEP | Switzerland | French for SBPV, q.v. |
| Ashbrook, Stanley B. | USA, Confederate States | Cincinnati 1926, 1882–1957(58?) |
| Asinelli | Italy and States | See Colla Asinelli |
| Asinelli, E., Torino, 2 | Italian States | Turin, dealer |
| Ateneu Comercial do Porto, Núcleo Filatélico. Certif. | Portugal | Porto 2002 |
| Aufdruck falsch | German area (mainly) | German for "Forged overprint" |
| Aune, Finn. Certif. | Norway | Vollen (Norway), b. 1955, dealer, expert 1989–, AIEP 1997–, [FFE3, PE] |
| Aurioles, Emilio | Spain and Colonies | Madrid 1960s, dealer |
| Avi, Dr. Helmuth. Certif. | Italy and States, Italian Colonies, San Marino, Vatican | Lugano 2002, SBPV |
| Avia Lopez, Jaime | Spain | COMEX 1996 |
| AW | Hungary | See Walder |
| Az.Voka (A3.Boka) | Russia (Armies, areas), Azerbaijan | Probably Azerbaijan Philatelic Association, also on forged |
| Aznar Havana Cuba | Cuba | Also on forged |
| B (in circle, manuscript) | Hungary (Debrecen), Rumania (Regatul) | See S. Bayer (Galatz), [Flasch] |
| B (actually JB) (monogram) | Ukraine, Western Ukraine | See Baumgarten |
| Babor, Gerhard. Certif. | Austria | Vienna 2001, b. 1952, auctions (Dorotheum), VÖB, AIEP 2004–, [FFE8] |
| Bach, Jean Paul | Worldwide | Basel, b. c. 1953, dealer 1981–, member of BPB 1999, q.v. |
| Bach, Ludwig | Saar (Mi 226I–238I, 1947) | Saarbrücken 1949, dealer. |
| Bacon, Sir Edward Denny. Certif. | Worldwide | London, 1860–1938, RPSL Exp. Comm. |
| Baete, Jean ('J. Baete', in italics, violet) | Belgium | Brussels, 1919–97, AIEP 1971–97, [Soeteman] |
| Balasse, Guy | Belgium and Colonies, Worldwide (pre-1900) | Brussels 1999, [Soeteman]. Note |
| Balasse, Willy (in italics (forged!), red or black German style C in rectangle, or in manuscript) | Belgium | Brussels 1943 1961, 1906–92, dealer, AIEP 1952–92 |
| Ballschmidt, Günter. GB (?) | Germany East (Bezirk 1948) | Essen, Berlin 2002, BPP 1976 |
| Banater Philatelist ('PhB', qv.) | Hungary (Debrecen; on genuine) | A Temesvár magazine, [Flasch] |
| Banker, Reinhard | German States (Prussia) | Not BPP. One person named R B lived in Osnabrück 1954–2011 |
| Banks, Barry | USA, BNA, Br. Colonies | Ogden Utah, Empire Philatelics, Profess. Stamp Experts 2000 |
| Bar, Julij ('J3ar'). Certif. | Yugoslavia | Ljubljana 1941, expert c. 1955–80 |
| Barabassy, Nicolaus | Hungary | Frechen (DE), BPP 2000– |
| Baranya II Tevny. (in metal) | Hungary (Baranya errors) | See [Flasch 56], forged in rubber |
| Bargagli-Petrucci, Count Filippo | Italian States (Tuscany) | Firenze, 1926–84, dealer, AIEP 1954–84 |
| Bärsch, Jürgen (Barsch) | Saar (Official Mi 1–32) | Wiesbaden, BPP 1996 |
| Bartels | Estonia, Switzerland etc. | Hamburg, dealer, in use c. 1950–70. Note |
| Bartels, John Murray | Worldwide | Am. Phil. Ass. expert early 20th century |
| Barth, Norbert | Germany (1945–6 certain locals) | Wegberg 2005, BPP 2005– |
| Baschwitz, Germán. Certif. | Spain | Madrid, CEM 1996, BPP 2001 |
| Basel, Briefmarkenprüfstelle | Europe, Worldwide | See Briefmarkenprüfstelle Basel |
| Basika, Karel | Czechoslovakia | Czechoslovakia, 1903–68, SCF |
| Bates, Richard | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Bátori (Artur Emil Batori) | Hungary (Debrecen etc.) | Budapest, dealer, a good mark, [Flasch] |
| Baudot, Jean-François (manuscript) | France | Bourges (France) 2001. Note |
| Bauër, Henry | German States (NDP (Alsace-Lorraine)) | Strasbourg 1926, dealer |
| Baumgarten, Josef, 2 (cf. [Flasch]), 'JB' (monogram). Note | Western Ukraine, Ukraine, Hungary | Vienna 1920s, dealer, also on forged |
| Bayer (manuscript) | Iceland | . |
| Bayer (S. Bayér) | Hungary | Galatz (Rumania), dealer, [Flasch] |
| Bazant, Andreas | Austria | Vienna 2001, b. 1961, dealer, VÖB |
| BBB (in two lines, also in circle) | Russia (areas), Ukraine | On forged. Cf. Ernst |
| BBB (in three lines) | Hungary (ovpt) | On genuine, [Flasch] |
| BBB (within a triangle) | Korea (Kingdom/Empire) | . |
| Beal, James H. | Mexico | Ohio, 1922–87, APS |
| Beaufond, Edgar Huyghes de | France | Paris 1943, 1886–1964, dealer. Note |
| Bechtold, Günter (forged) | Germany (Infla incl. Official) | Weilheim, b. 1930, expert 1984–, BPP 1991, AIEP 1991–2001, [FFE3] |
| Beck, Charles | Luxembourg | Luxembourg 1950 |
| Becker, Ing. Ernst (forged). (Ing. = Engineer) | German States (Prussia), Germany (Berlin, Bizone 1948), Germany East (OPD Meckl.-Vorp.), German occ.s Poland (GG) and Kurland, Lithuania, Central Lithuania, Memel | Anklam 1935, Hamburg 1950, 1894–1971, BPP 1961, AIEP 1954–71 |
| Becker, G. ('G. Becker–Echt') | Poland | Poland pre-WW2, dealer. Mostly on forged [Stallberg] |
| Beckhaus, Walter | Germany (postal stationery?) | Berlin, BPP 1961 |
| Beeck, Edmund van der | Russia | Moscow 1897 |
| beetle (picture of) | Germany (and several related areas) | See Dub, Dr. Emil |
| Behr, Bernard. Certif. | France | Paris, b. 1924, dealer, expert 1954–, AIEP 1974–, [PE] |
| Behr, Georges (script mark) | France and Colonies | Paris, b. 1893, founded the shop in 1920 |
| Behr, Pascal Olivier | France and Colonies | Paris, b. 1962, dealer, expert 1991–, AIEP 2001–, [FFE6, PE] |
| Behrens, 2 (for use on Propaganda Forgeries), advert. | Worldwide | Walter B., d. 1950, dealers, Braunschweig, also on forged, [Flasch] |
| Behrsin, Alfred | Russia (NW Army) | Pskov (Pleskau), 1920s |
| Belasco, Steven R. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Belgian Congo Study Circle. Certif. | Belgian Congo | Belgium |
| Bellenger, Gerard | France | Normandy 2000, status uncertain |
| Bellion, P. | France, Europe | Paris 1943, dealer |
| Bender, Rainer | German occ. WW2 Lithuania | Cologne d. 2010, BPP 2007–2010 |
| Beneš, František (Benes) ('Pofis-Beneš') | Czechoslovakia, Bohemia & Moravia | Prague 2001, b. 1955, dealer (Profil), SCF chairman, AIEP c.2006– |
| Beneš Sr., František (Benes) | Czechoslovakia (postal history) | Prague, b. 1931, dealer (Profil) |
| Benol | Czechoslovakia | Dealer's or owner's mark. [Hoffmann] |
| Benon, G. | ||
| Benussi, Ruggero | Fiume, Yugoslavia (1918–41) | Bolzano, 1924–2004, expert 1948–2003, AIEP 1964–2003, [FFE6] |
| Benzinger, Prof. Heinz | China (Empire), Shanghai | Munich, BPP 1980 |
| Berbeka, Janusz | Poland (all, exc. Plebiscite, Locals) | Poznan 2000, Polish Fed. |
| Berck, Edouard. Mark? | France | Paris 1961, c. 1900–94, dealer, AIEP 1954–94 |
| Berger, Ant. | Luxembourg | Luxemburg 1897 |
| Beresta (reportedly) | Poland (Cracow 1919) | ? |
| Berger, Florian. Certif. | German States | Limburg, b. 1939, dealer, BPP 1980 |
| Berger, L. | German States (Brunswick) | Braunschweig 1897 |
| Berger, P. E. (two sizes) | Turkey, Poland? | . |
| Bergua, Enrique Soro | Spain and Colonies | See Soro Bergua, Enrique |
| Berlingin, René | Belgium | Ham-sur-Heine 1935 1950, dealer |
| Bernardelli, Renzo | . | Italy, 1905–75, AIEP 1960–75 |
| Bernhöft, Joachim | Germany (Allied occ. 1946–48 colours) | Frankfurt a.M 2007. Note |
| Bernichon, Jules, Paris. (Jules Anthoine) | French Colonies, Malaya, Turkey, etc. | Paris, d. 1911, dealer, mark forged by [Wondelgem] |
| Berntsen, Arnstein | Norway | Oslo, d. 1980? |
| Berra-Gautschy, Rémy. Certif. | Switzerland | Monthey (CH), b. 1931, expert 1972–, AIEP 1985–, SBPV, [FFE3, PE] |
| Beskow, Bernhard | Iceland | Stockholm, dealer (Frimärkshuset) |
| Bessels, Giel J. | Netherlands Indies | Netherlands 2001, BKD expert, [FFE4] |
| Bettin, L. (or I.) | Italy | . |
| BÉVI (in circle) | Hungary (ragasztó = forged) | Budap., expert comm., active, [Flasch 60] |
| BG | Sweden | See Grenstedt, Bo |
| Bialek, Henryk | Poland | Warsaw 2000, Polish Fed. –c.2005 |
| Bialikamien, Enrique. Photo | Costa Rica | San José, Asoc. Filat. de C.R. 2001 |
| Bianchi | Russia | John Bianchi (see below), or B. Bianchi, Geneva, both dealers, up to 1940s |
| Bianchi, Ennio. Certif. | Italy | Milan 2001. Note |
| Bianchi, John | Switzerland (Cantons and Rayons) | Zurich-Zollikon 1926 1950, (see above) |
| Biermann | Ukraine | Germany, collector, on genuine, [UPNS] |
| Biesecke, Franz | Denmark, Iceland, Norway, Germany | Berlin 1950, 1888–1966, BPP 1961 |
| Bifani, Giorgio. Certif. | Italy esp. Italian Social Republic | Roncadelle Brescia 2009 |
| Bilandzic, Thomir | Yugoslavia (SHS), Fiume | Zagreb 2006, CPS |
| Bileski, Kasimir (KB in oval) | St. Pierre & M. (France Libre) | Winnipeg CA 1908–2005, dealer |
| Billig, P., Wien | Ukraine | Not Fritz Billig? |
| Binner Norden, Erich | Heligoland | Wilhelmshaven 1950, d. 1956 |
| Biondi, Gino. Certif. | Italy and States | Firenze 2001, dealer. Note |
| Birnbach, Heinrich | Rumania (1866–72) | Berlin, b. 1872 |
| Birnbaum | German States | Note |
| Biró, Marcel (see the scans) | Hungary | Debrecen, see [Flasch 63] |
| Bísek, Jirí | Worldwide (air mails) | Praha, expert 1974–2002, SCF 2001 |
| Bishop, Rex D. | German Colonies, Greece, Japan | Boonton NJ (USA) 2001 |
| Bisk, Alexander | Russia and areas, Ukraine | New York NY, dealer |
| BKD, Bondskeuringsdienst. Certif. | Netherlands and Colonies | Dutch Federation's Expertising Service, f. 1922, [PE] |
| Blaha, Dr. Miroslav (in script) | Czechoslovakia, Carpatho-Ukraine | Skalitz, Zabreh (CZ), 1921–93. Note |
| Blanc, Robert (metal hand stamp) | France and Colonies | Paris 1943, dealer |
| Blecher, Friedrich Wilhelm. Certif. | Germany (NDP, Alsace-Lorraine) | Essen, Winterberg, 1924–2000, BPP 1976, AIEP 1976–98 |
| Bloch, Herbert J., 2 (manuscript). Certif. | Worldwide, Poland (Cracow 1919) | New York NY, 1907–87, expert 1950–87, AIEP 1956–87. Note |
| Blomberg, Erik | Sweden | Stockholm 1961 |
| BM (inside map outline) | CSA, USA (Tennessee postal history) | See Matz |
| Bobecka, Vladimir | . | Rumania, b. 1921, AIEP 1958–62 |
| Bochmann, Dr. Eugen von | Russia | Riga, 1836–1901 |
| Böcking, Jean (Bocking, Boecking), J. B. | Saar | Saarbrücken, 1873–1925, expert c. 1920–25, the JB mark has been forged [Wilhelm van Loo] |
| Boden, Erich | German Colonies | Braunschweig 1950, b. 1878 |
| Bodor, Dr. Mihály | Hungary (occ. and local issues), Fiume | Pécs 2006, [Flasch]. Note |
| Boeck Parada, Eugenio von | Bolivia | Bolivia, b. 1923, [FFE3 6] |
| Boekema, Roelf | Netherlands and Colonies | The Hague, 1904–97, dealer, BPP 1961 |
| BOG ERT DUR BIN (one letter on back of each stamp in sheet) | USA (Providence RI reprints) | Bogert & Durbin Co, New York NY 1898, dealers |
| Bogquet | France | . |
| Bohdan, J., 'J.B.' | Ukraine | Rumania, on forged |
| Böheim, Dr. Julius (Boheim) | Germany East (Bezirk 1948) | Konstanz, BPP 1991 |
| Bohler, René. Certif. | Switzerland | Hindelbank 1974, SBPV |
| Bohne, Dr. Werner M. Note | Germany incl. all areas | Longwood FL, 1920–1998, AIEP 1985–98 |
| Bojanowicz, Miroslaw A. | Poland incl. locals | Rome 1949, later Wembley (GB), 1906 or 1907–86, dealer, BPP 1961, AIEP 1961–86. |
| Boker, John R., jr. | USA | USA, b. 1913, Philatelic Foundation |
| Bokvaj, Milan | Europe, Scandinavia (postal history) | Prague, SCF 2001 |
| Bolaffi, Alberto (jr.). Certif. (the company) | Italy and States | Turin, b. 1936, son of Giulio, dealer, expert 1975–, AIEP 1983–, [FFE5, PF] |
| Bolaffi, Alberto (sr.) | Italy and States | Turin, 1874–1944 |
| Bolaffi, Dr. Dante | Italian States | Turin, 1908–88, son of Giulio, AIEP 1976–88 |
| Bolaffi, Dr. Giulio (manuscript). Certif. | Italy | Turin 1961, 1902–87, son of Alberto sr., AIEP 1954–87 |
| Booleman, M. Z. | South Africa | Amsterdam 1897 |
| Booleman, W. R. | Ukraine | Netherlands? |
| Borek, 2, 3 | Worldwide | Richard B. (Sr.), 1874–1947, dealers f. 1893, in Braunschweig, [Flasch] |
| Born, Carl | Worldwide | Leipzig 1897 |
| Bortfeldt, Dieter | Colombia | Bogotá, b. 1940, expert 1994–, AIEP 2002–, [FFE6, PE] |
| Boskovic, Zoran (ZB), 2 (in use 2005–). Certif. | Yugoslavia (certain former areas, see note) | Belgrade, b. 1957, expert 2001–, Phil. Assoc. Serbia & M. Note |
| Bossert, H. W. Certif. | Switzerland | Basel 2005, independent expert |
| Bothe, Hans (forged twice). Certif. | Germany, German Colonies incl. GRI | Berlin-Tempelhof, deceased, BPP 1961 |
| Botscheck, Hanns (HB) | Czechoslovakia (Sudetenland issues) | Information |
| Bottacchi, Giacomo F. Certif. | Italy (1862–78), Italian States (esp. Sardinia) | Milan, b. 1962, auction agent, expert 1986–, AIEP 1999–, [FFE3, PE] |
| Boule, Maurice | Monaco, Italy, France, Worldwide | Monaco 2002, Paris 1999, b. 1943, dealer, expert 1987–, AIEP 2002–, [FFE6, PE] |
| Bouvet, Dr. Pierre | France | Paris 1943. Note |
| Bowen | Iceland | . |
| Bowman, James W. | Confederate States | Lubbock TX 2000 |
| BPA. Certif, 2 | Br. Colonies, Worldwide | British Philatelic Association, f. 1928, [PE]. Note |
| BPB | Europe, Worldwide | See BPBS |
| BPP. Meaning of the position of marks | Germany (incl. all areas), Europe, Worldwide | Bund der philatelistischen Prüfer, Germany, f. 1958 |
| BPSB, Briefmarkenprüfstelle Basel | Europe, Worldwide. Also on forged | Basel, expert committee. Note. Certif. |
| Brainard (in script) | Worldwide | Christopher E. B., New Jersey, dealer (B&S Stamp Bourse), [Flasch] |
| Brandes, W., 2 (in script) | German States and Colonies | Probably: Willi B. Jr, Berlin 1943, dealer |
| Brandon, David. Certif. Note | Great Britain, Br. Colonies | Guildford, dealers, independent experts |
| Braun, Axel | Saar | Waldmohr, BPP |
| Braunstein, Ilia. Mark? | Worldwide (air mails) | Brussels, 1909–80, AIEP 1970–80 |
| Brekenfeld, Carsten | German Carolines, Cameroun and Togo | Berlin, BPP 2001 |
| Brett, Marcell | Germany (Soviet occ. locals) | Burg OT Detershagen, BPP 2014– |
| Brettl, Cornelia. Certif. | German States (Bavaria air mails), Heligoland, Lubeck | Vaterstetten, BPP 2004– |
| Brettl, Maria. Certif. | German States (esp. Bavaria, air mails), USA (pre-WW1), Argentina (Corrientes) | Vaterstetten, b. 1930, expert 1964–, BPP 1968–10, AIEP 1968–, [FFE3, PE] |
| Brettschneider, W. | Australia | Melbourne 1897 |
| Breul, Arno(ld), 'A' (in circle) | Ukraine | Gera-Zwötzen 1950 1961 |
| Brevi | Hungary | [Flasch] |
| Briefmarkenprüfstelle Basel | Europe, Worldwide | See BPBS |
| Bringmann, Dr. Wolfgang | German States (Prussia) | Berlin, BPP 1991 |
| Bristow, Mercer | Worldwide | B. 1951, APS Dir. of Exp., [FFE3] |
| Brooks | Hungary (Szeged) | . |
| Brooksbank, Randall | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Brudeseth, Ĺge | Norway | Norway 1999 |
| Brugger, Guido. Certif. | Germany (Mi 1–30) | Meckenbeuren, BPP 1996 |
| Bruhl, Emil | Estonia | Tallinn, expert c. 1930–60 |
| Brun, Aimé. Photo. Certif. Note. Advert. | France and Colonies, Worldwide | Paris 1926, 1887–1969, dealer 1926. Note 2 |
| Brun, Jean-François. Certif. Photo. Note | France and Colonies | Paris, b. 1943, expert 1970–, BPP 1984, AIEP 1970–, [FFE2, 3 (p. 167) 6, 7, PE] |
| Brunel, Robert | German occ. WW2 Balkans and Sudetians | Mauerstetten, BPP 2001– |
| Brunner, Felix ('F. Brunner') | Czechoslovakia (Posta 1919), Austria | [Flasch], (q.v. Am. Phil. Congr. Book 1944: b. 1893) |
| Brunner, Joh. | German States (Bavaria) | B. 1874 |
| Brys, J. (in black) | Belgium | John B., [Soeteman] |
| bsb | Czechoslovakia | See Skandera |
| BSC (in German type) | Hungary | [Flasch] |
| BSRP | Russia and areas | British Soc. of Russian Philately. Note |
| Buchbinder, Dr. Med. Jürgen. (Used to mark forged stamps as such.) | Poland (Przedborz) | Bad Sassendorf? c.2000, a specialist collector |
| Buchsbayew, Dr. Paul | Russia, Soviet Union | New York NY, b. 1952, Cherrystone Auctions, expert 1986–, AIEP 1992–, NFF, [FFE5, PE] |
| Buchta, Eduard | Czechoslovakia | Czechoslovakia, 1911–77, SCFS |
| Budapester Bg. Börse | Hungary (Szeged) | [Flasch] |
| Bühler, Georg 2 (+forged twice). Photo. Certif. Ads. (Buhler, Buehler) | Germany and States, Europe, South America and Worldwide (all pre-1900), Br. Colonies | Berlin, d. 1999, auctioneer 1931–, dealer 1943, expert, BPP 1961. Note |
| Buijs, H. H. | Netherlands Indies | Tegal (Neth. Indies) 1897 |
| Bukvic, C., Kr. Vinohrady | Czechoslovakia | Prague-Vinohrady, dealer |
| Bulat, H. (in Cyrillic script; also in Latin script), Bulat BPP | Ukraine, Carpatho-Ukraine, Western Ukraine, Poland | John Bulat, Yonkers NY, d. 1999, BPP 1976 |
| Bulkley, Jonathan | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Bungerz, Alexander von | German occ. Libau; Latvia, etc. | Vienna, 1874–1931 |
| Büning, Paul (Buning, Buening) | Greece | Wiesbaden 1950 |
| Buranasombati, Pichai (Works as member of committee.) | Thailand | Thailand, b. 1944, expert 1999–, AIEP 2003–, [FFE7, PE] |
| Burgdorf, W. | Iran (Persia) | Bremen 1961 |
| Burger, Alfred (forged). Certif. | Saar (Mi 1–52) | St. Ingbert 1997, BPP 1980 |
| Burger, Ernst | Israel, Palestine | Cologne-Lindenthal, 1921–83, BPP 1968, AIEP 1978–83 |
| Burhop, Dedo | Germany East (OPD 1945, Bezirk 1948) | Butjadingen (Germany) 2003, dealer |
| Burillo, Antonio | Spain | CEM expert 1996 |
| Burneleit, Albert | Germany (Infla colours) | Berlin 1942 1961 |
| Busch, Werner. (Forged: Busch BBP (sic!).) | Germany, Turkey | Berlin-Wilmersdorf 1950 |
| Busse, Joachim | Germany East (Bezirk 1948) | Reichling 2003, BPP 1984–2008 |
| Bustillo, Larry | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Butikofer, Fréd | Europe | Pully (CH), d. 1978, AIEP 1954–74 |
| Butler, A(rthur) Ronald | Colonies in Australia | West Worthing (GB), 1916–2003, AIEP 1978–2003, Past Chairman RPSL Exp. Comm., [FFE1 2 4] |
| Byram, J. | Ukraine, Western Ukraine | See Bulat, John (the Cyrillic mark) |
| C in German style in rectangle, red or black | Belgium | See Balasse, Willy |
| CA (monogram) | Czechoslovakia | See Cerny, Antonín |
| CA (or AC, in circle) | Poland (Cracow 1919) | [Scan: Slawomir Sejda] |
| CA (in circle) | Ukraine | Reported to be Breul, q.v. |
| CA, einf. CA, CA CA. (einf. = single) | Br. Colonies | CA or Multiple CA Watermark, (not an expertising mark) |
| Caffaz, Egidio Primo. Certif. | Italy and areas | Padova 2001, dealer. Note |
| Cajal Mora, Antonio | . | Madrid, 1905–87, AIEP 1954–75 |
| Cajal Ońate (Onate), José Antonio. Certif. | Spain | Spain, b. 1933, CEM expert 1996, AIEP 1971–74 |
| Calhoun, Col. Richard L. | Confederate States | Chicago 2000, CSA |
| Calves, Christian. Certif. | France and Colonies | Paris, 2009–, dealer. Positions |
| Calves, Roger (in script (often worn); and in manuscript). Certif., 2 | France and Colonies, Europe, Worldwide | Paris, 1921–2009, dealer, AIEP 1960–99, BPP 1984 (no longer). Note |
| Cammaerts, Roger | Belgium | Belgium 1999, [Soeteman] |
| Campo, Ricardo del (R. del C.) | Cuba | Spain? |
| Cancellation removed | Worldwide | Stamp's cancellation has been removed |
| Cancelled to order (CTO), 2, 3 | Worldwide | "G" means printed cancellation |
| Capill, Colin G. | New Zealand | NZ, RPSNZ Exp. Comm., [FFE1] |
| Capouch, Stanislav | Austria (–1918) | Prague, SCF 2001 |
| Caran, Dr. Mirko | Yugoslavia and areas | Belgrade 2004, Phil. Assoc. Serbia & M. |
| Cardillo, Paolo | Italian States (esp. Sardina) | Turin 2008, b. 21.2.1966, SPC |
| Carion, Georges. Advert.1, Advert.2 | France and Colonies (ovpt.s) | Paris 1926, dealer, forger and 'expert', advertised in 1909, [Tyler; Brühl p.492] |
| Carlsson, John (advert. for) | Sweden | Kalmar, collector or dealer |
| Carné, M. | Cuba | . |
| Caro, Erwin | Israel | . |
| Carraro, Gianni. Certif. | Italy | Milan 2001, dealer. Note |
| Caspary, Alfred H. | Worldwide (pre-1940) | New York NY, 1877–1955, PF |
| Cartel, Dr. | Saar | Or Bartel, Dartel, Gartel? |
| Cassinie, G. | Egypt | Alexandria, dealer |
| Castle, M(arcellus) P(urnell) | Worldwide | England, 1849–1917, RPSL |
| Cattani, Adriano | Italy (pre-adh.) | Padova 2005, dealer |
| CEH CO | Latin America | See Hussman |
| Celler, Dick | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| CEM. Certif. | Spain and Colonies | Comisión de Expertos de Madrid. Note |
| Ceremuga, Krzysztof (Chris) | Australia (Cmwth), Papua, New Guinea, Togo (1914–18), Samoa (1914–18) | Sydney, b. 1973, expert 1994–, AIEP 2001–, [FFE3, 5, PE] |
| Ceresa, Dr. R. J. in green, often smudged; RJC (note). Certif. | Russia and all areas, Armenia, Azerbaijan, Georgia | Raymond J. Ceresa, England 2001, expert 1977. Note |
| Cermak | Bohemia & Moravia | ? |
| Cerny, Antonin, 'CA' | Czechoslovakia | Prague na Újezde, d. 1938, dealer |
| Cerruti, Antonello | Italy and areas | Rome 2008, b. 25.1.1952, SPC |
| Cerruto, Giorgio (manuscript) | Italian States (Sardinia), Italy (Kingdom & Socialist Rep.) | Brescia 1988, b. 21.8.1922 |
| Chalot | France and Colonies | Paris dealer Chagot? |
| Champagne, David | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Champagne, Richard | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Champion, Théodore, 2?, 3 (3a), (also a winged wheel twice, in violet) | Worldwide | Paris 1926, 1873–1954, dealer 1902–. |
| Chan, Dr. Shiu-Hon | China incl. all areas, Hong Kong, Macau | Hong Kong 2004 |
| Chang Min | China | Hubei, b. 1952, [FFE3] |
| Charlat, L. W. | Panama Canal Zone | . |
| Chauvet, Michčle | France (postal history –1878) | Bussy-Saint-Martin (F), AIEP c.2006– |
| Cherniavsky, Dr. Ivan, 'JCz' | Western Ukraine | Kolomyya, [Bulat] |
| Chesloe, Charlie | Czechoslovakia | Willow Springs IL USA 2002, dealer (Tribuna Stamp Co.), Tribuna Expert Committee |
| Chevalier, Jean | France | [Thomas Berger, CH] |
| Chevassu, Dr. Maurice | France | Paris 1949, (1877–1957 ?). Note |
| Chiavarello, Dr. Giovanni. Certif., 2 | Italy and States, Albania | Naples 2001. Note |
| chicken (picture of) | Luxembourg | . |
| Chile, Sociedad Filatelica de. Certif. | Chile | Comisión de expertos, Santiago |
| Chomiak, Maksym | Ukraine | Canada, collector |
| Chvalovský, Josef | Czechoslovakia | Praha, SCF 2001 |
| Cividini, Dragutin (?) | Rumania etc. | Croatia of today (if same person) |
| Cividini, Jean, Paris | France, Austria etc. | Paris, dealer, c. 1910–60, not reliable [cf. Sperati II, Tyler] |
| CKBIP | Ukraine | See Skweir |
| Clark, Peter | German occ. Channel Is., Great Britain (Lundy), Propaganda forgeries | Düsseldorf, Sanderstead (Surrey), BPP 1961 |
| Clercq, Leo De | Belgium | Belgium, FRCPB expert 1970–, [FFE1] |
| CM | Russia (areas) | On forged |
| CŘA (Russian for 'SFA') | Russia, Soviet Union | See Soviet Philatelic Association |
| Cock, André-Emile de | Belgium (cancellations) | Brussels, 1880–1964, BPP 1961, AIEP 1954–64 |
| cogwheel | Nicaragua | . |
| Cohen Sabban, Albert | France (1900–) | Paris, b. 1945, dealer, expert 1980–, AIEP 2000–, [FFE4, PE] |
| Cohring, F., Berlin | Ukraine | Berlin, dealer |
| Colic, J. V. (Jerko V.) | Yugoslavia (Croatia) | Zagreb during WW2 |
| Colla(-Asinelli), Dr. Giorgio. Certif. | Italy and States | Turin, b. 1946, expert 1977–, AIEP 1984–, [FFE1 3 4, PE] |
| Collan, Mikael | Finland air mails (except Zeppelin) | Salo, b. 1975, Finn. Phil. Fed. 2022– |
| Collins, Commander F(rank) W(illiam) | Cape of Good Hope | Winchester (GB), c. 1907–89, AIEP 1967–89 |
| Colson, Warren H. ('W.H.C.') | USA (provisionals), Hawaii | Boston, 1882–1963, dealer |
| Comelli, Paulo | Brazil | Belo Horizonte, b. 1943, AIEP 2003–, [FFE7, PE] |
| Comerma | Spain | A Catalan name? |
| COMEX. Note | Spain and Colonies, Andorra | Comisión de Expertos Filatelicos, Barcelona, f. 1965, [PE] |
| Commission Belge d'Éxpertise | Belgium | Brussels 1950 |
| Cooper, Jal (manuscript) | India | Bombay, d. 1972, famous dealer |
| Coptoir Central (in circle) | Albania (Korce), etc. | On forged |
| Corette, Tom | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Corneille (in red). Note (3) | Belgium and Colonies | See Soeteman |
| Cosmopoulos, L. (in script), 2 | Greece and areas | Greece? 1973 |
| Costales, Eugene N. Note | USA | New York NY, 1894–1984, dealer 1926 |
| Costantino, E. | Worldwide | Probably a US collector's mark |
| Cotter, L., Maroc | Morocco | |
| Coughlin, Ray L. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Coutinho Vieira, Maria Isabel | Portugal and areas | Portugal 2005, Inexfip apprentice |
| Cowitt, Richard I. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Crha, Frantisek | Czechoslovakia | Czech Rep., b. 1931, expert 2004– |
| Critikian - Madrid | Spain | Renato (René) C., Madrid 1943, 1908–91, dealer, AIEP 1954–c.56 |
| Croatian Philatelic Association | Yugoslavia | Zagreb |
| Cronin, Andrew | Russia, Carpatho-Ukraine, Mongolia | Toronto, b. 1925, AIEP 2000–, [FFE1 4 (p.174) 5, PE] |
| Crowe, William T. (Works as member of committee.) | USA, US Possessions | New York NY, b. 1947, expert 1973–, PF, AIEP 1999–, [FFE5, PE] |
| crown over A | Czechoslovakia (Posta 1919) | See Sula, Jaroslav |
| CS (in red). Note (3) | Belgium and Colonies | See Soeteman |
| CSA | Confederate States | Confederate Stamp Alliance. Note |
| Csaba | Hungary | On forged [Flasch] |
| Csepreghy (= Lajos Csepregi?) | Hungary | Budapest 1943, dealer, [Flasch] |
| CSS. Certif. only | China and related areas | The China Stamp Society Inc, MO, USA |
| CTO | Worldwide | See cancelled to order |
| Cueni, Dr. Werner. Photo | Switzerland, Czechoslovakia, Estonia, Europe, Worldwide (air mail ovpt.s) | Basel 1949, 1897–1955, official expert 1949, AIEP 1954–55 |
| Cuesta, Ernesto (E. C.) | Cuba | Ciudad México 1947, APS expert |
| Cunliffe, Robert | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Curinaldi, Dr. | Yugoslavia (ovpt Bosnia) | Luigi von Curinaldi (Alois Kurinaldi), 1908? |
| Cuvelier, M. | Morocco | Paris 1943, dealer |
| CW (in oval) | Finland | See Wasenius |
| CW (in square) | Ukraine | See Shramchenko, [UPNS] |
| CWR | Ukraine | See Roberts |
| Czechoslovak Philately, Society for | Czechoslovakia | USA |
| Czencz, Dr. Sándor, 'DrCzS.' | Hungary (Sopron 1956) | Hungary, [Flasch] |
| Czimmek, Ulrich | German South West Africa | Düsseldorf, BPP 1991 |
| d (in circle) | Germany, etc. | See Pfarrer Dieckelmann |
| D (in blue): genuine perforation | Belgium and Colonies | See Soeteman, additional marks |
| D | Germany | See Herrmann Decker |
| D | Germany and areas | Reported to be a mark of Dr. Dub, q.v. |
| D (Cyrillic letter, 'Д') | Russia and areas, Ukraine | See Davidoff |
| Dadkah, Dr. Mohamed | Iran (Persia), Br. occ. Bushire | Teheran, 1910–80, AIEP 1970–80. Note |
| Daebel, Roland | Iceland | Wensickendorf, b. 1951, BPP 1991 |
| Dahmann, Kurt | Worldwide (air mails) | Berlin-Wilmersdorf 1961, b. 1915 |
| Dahnke, Kurt H. Certif. | Tibet, Chinese PO Tibet | Nuremberg, BPP 1976 |
| Dalston, Thomas | Worldwide | England, b. 1845 |
| D'Ambrosio, Susan | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Daniel, Frantisek | Russia and Soviet Union (air mails) | Czechoslovakia, 1912–94, SCSF |
| Dannenbaum | German States (Brunswick) | Essen 1935 |
| Darmietzel, Peter | Czechoslovakia, Bohemia & Moravia | Marktsteinach, BPP 1996, SCF 2001 |
| Darteyre, Didier (pencil) | Peru, Syria (Arab Kingdom) | France, 1920s, dealer |
| Darteys, D. ? (pencil) | ||
| Davidoff, 'D' (Cyrillic letter, 'Д') | Russia and areas, Ukraine | A Russian General, on genuine, [UPNS] |
| Davis, Trevor (Works as member of committee.) | Australia, Colonies in Australia | London, b. 1940, dealer, expert 1980–, AIEP 2001–04, Brandon Exp. Comm., [PE] |
| Debney, Richard | Cape of Good Hope | New York NY 2001 |
| Debo, Dr. Arno | Denmark, Danish WI, Faroes, Greenland, Iceland, Germany (Hapag) | Heidelberg, Munich, 1921–2000, BPP 1958–, AIEP 1967–2000 |
| Decker, Hermann ('D'). Note | Germany | Hannover, dealer, expert 1880–, replaced genuine with forged 1897 [GSM 1897–8] |
| Declercq, Leo | Belgium | See Clercq, Leo De |
| de Cock, André-Emile | Belgium | See Cock, André-Emile de |
| Deilakis (script), 2 (caps.) | Greece, Eastern Rumelia | Paris, pre-WW2, dealer |
| del Mazo, Jorge S. | Argentina | See Mazo, Jorge S. del |
| del Tarre, Francisco | Spain | See Tarre, F. del |
| Delapierre, Robert (also 'R.D.' ) | Belgium | Belgium 1966, 1891–1970, [Soeteman] |
| Delgado, José | . | Madrid, c.1880–c.1970, AIEP 1954–c.56 |
| Dellavalle, Lorenzo | Italy and States | Turin, b. 1938, expert 1984–, AIEP 1991–, [FFE5, PE] |
| dem | Hungary | [Flasch] |
| Dempwolff, Bernhard | Norway | Mainz-Hechtsheim, BPP 1968 |
| Demuth, René. Certif. | Luxembourg | Bridel (Lux.), b. 1920, expert 1973–99, BPP 1980, AIEP 1973–2003, [FFE4] |
| Derecskei, Attila | Hungary and all areas incl. occupation and local issues, Austro-Hungary (1850-1867) | Budapest, MBSZ and VPEX expert. Note |
| Deutsche Kinderpost Amt I | Worldwide | "German Children's Post Office I" |
| Deyhle & Co, Robert | Switzerland (Cantons) | Bern, dealers, experts 1880– |
| DG (in manuscript) | Saudi Arabia | See Graham |
| Diaz Paulos, Fausto | Uruguay | Montevideo, b. 1927, expert 1980–2002, AIEP 1980–2003, [FFE3] |
| d (in a circle) | Germany, etc. | See Pfarrer Dieckelmann |
| Dieckelmann, Pfarrer ('d' (in circle)) | Germany, etc. | Germany, dealer or collector |
| Diena, Alberto. Certif. | Italy and States | Rome 1950, 1894–1977, expert 1941–, AIEP 1954–77, son of Emilio |
| Diena, Emilio, 2 | Italian States | Rome, 1860–1941, expert 1921– (1897?) |
| Diena, Dr. Enzo. Certif. Note | Italian States, Italy and Colonies, Italian occ.s and PO abroad, Trieste, Vatican, Germany | Rome, 1927–2000, expert 1950–, AIEP 1975–2000, BPP 1980, son of Alberto, [FFE3] |
| Diena, Mario | Italian States | Rome, 1891–1971, AIEP 1954–56, son of Emilio |
| Diena, Raffaele. Certif. | Italy and States | Rome 2000, son of Enzo, expert 1993– trading as Enzo Diena s.n.c. |
| Diepenbroek, Willem J. | Ukraine | Bussum (Netherl.) , purchased Dr. Seichter's collection, BPP 1980 |
| Dietrich, Artur; 2 | German Colonies and States (Saxony), Heligoland, Europe (pre-1900) | Leipzig 1950, Büttgen 1976, BPP 1961 |
| Dietrich, Horst | Afghanistan | Kaarst, 1923–2004, BPP 1980, AIEP 1976–2003 |
| Dillemann, Paul (manuscript) | France | France, 1886–1936 |
| Dimitrijevic, Vukadin | . | Nis (Serbia) 2004, Phil. Ass. Serbia M. |
| Dobbert, Karl-Heinz | German field post in Turkey | Berlin, 1912–90, BPP 1980 |
| Dobin, Manfred | Russia (pre-adh.) | St. Petersburg (Ru), b. 1925, expert 1991–, AIEP 1995–, [FFE4, PE] |
| Domar | Poland (Cracow 1919) | Poland |
| Dorfman, David. Certif. | Jordan (Transjordan) | Chicago Ill. 1979 |
| Dorogi Bp. | Hungary | Budapest, a collector's mark, [Flasch] |
| Doszkár, Emil | Hungary | Hungary, dealer |
| Doubleday, Ron | Pakistan (ovpt on India) | Great Britain 2004 |
| Dr. Cz S. | Hungary (Sopron 1956) | See Czencz |
| Dr. P. Jem | Russia (areas). | See Jemtschoujin |
| Dr. Ps. | Germany etc. | See Paul Sachse |
| Dr. P. Sz. | Hungary | See Szilágyi |
| Dr. Sz. | Rumania (Regatul), Hungary (Debrecen) | See Szalay |
| Dr. U J (in circle) | Hungary (Arad) | Seen on genuine stamps, [Flasch] |
| Drahn, August Wilhelm, A. W. Drahn | Germany (pre-1918), German States, Great Britain and Colonies, Italy and States, Switzerland, Austria, Netherlands, Spain and Colonies, Portugal, Rumania, Luxembourg, Monaco, Bulgaria, Turkey, Europe (pre-1900), Russian PO Levant, Uruguay, Worldwide (pre-1900) | Cologne 1943 and 1961, Bad Kissingen 1950, 1893–1974, dealer, Michel catalogue consultant (for pre-1918 listings), BPP 1958–, AIEP 1954–74 |
| Drazan, Vladimir | Czechoslovakia | Czech Rep., b. 1941, expert 2004– |
| Dreyfus, Alain | France | The Mulhouse dealer? |
| Dreyfus, E. R. | ||
| Droese, Bernhard ('B. Droese') | Denmark, Norway, Finland, Germany (1945 Flensburg local), Albania | Plön/Holstein 1950, Düsseldorf 1961, Bad Salzuflen 1968, BPP 1958– |
| Drossos, Pandelis J. (ΔΡΟΣΟΣ) | Greece, Epirus, Ikaria, Ionian Is. | Athens 1949, 1900–1996, dealer 1926 |
| Drzewiecki, Przemyslaw | Poland | Bydgoszcz 2008, Polish Fed. |
| Dsenis | Russia, Ukraine | See Dzenis |
| Dub, Dr. Emil, 2 (beetle, 3 versions), also 'D' for Saar? Also forged. (Certif.) | German occ.s and field posts WW2, Slovakia, Danzig, Italian occ. Fiumano-Kupa, Saar, Germany (Bizone 1948, Berlin), Germany East (OPDs), Austria (post-1918) | Oberstein 1950, 1883–1976, expert 1920–, BPP 1958–, AIEP 1954–74. Note |
| Dubel, Dr. (forged) | . | Germany 1960s |
| Dubus, Léon | . | France, 1894–1981, AIEP 1974–81 |
| Dujmic, Zdravko(?) | Yugoslavia | Zagreb, c. 1950–75 |
| Dumaine, Robert F. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Dünnebier, Dr. Herbert | Saar | Saarbrücken 1949. Note |
| Düntsch, Dr. Gerhard (Infla Berlin) (forged) (Duentsch) | Germany (Infla incl. Official) | Berlin-Lichterfelde, BPP 1961 |
| Duron Membreńo, Dr. (RDM) | Central America | Dr. Raúl Durón Membreńo, Tegucigalpa; forged |
| Duscha, Walter | Ukraine | Germany, b. 1903?, in Ukr. during WW2 |
| Dvorácek, Ladislav. Photo | Europe (pre-1900) | Prague, b. 1923, expert 1962–, AIEP 1969–, SCF 2001, [FFE5] |
| Dvorák, Frantisek | Austria, Czechoslovakia | Czechoslovakia, b. 1914 |
| Dy (in circle) | Hungary | [Flasch] |
| Dzenis, 2 (or Dsenis or Dzynis?) | Ukraine, Russia | Dzenis was a forger, cf. Dzynis |
| Dzynis Riga | Ukraine | Riga, dealer, usually known as Dzenis, produced ovpts using stolen devices |
| E (in blue): genuine essay | Belgium and Colonies | See Soeteman, additional marks |
| E. St. b. | Russia (areas) | See St. b., E. |
| eagle (head of) + expertising number | Austria | See Weiss, H. |
| EAH | Finland | See Hellman |
| Earée, Rev. Robert Brisco | Worldwide (not reprints, ovp, Indian st.) | Cheltenham, 1846–1928 |
| EB (complex) | Estonia | See Bruhl, Emil |
| Ebel (in script) | Europe | Arnold E. (owner Benno Krell), Frankfurt, auctions |
| Ebnet, Christian | Russia, Soviet Union | Kamenz, BPP 1991 |
| EC | Cuba | See Cuesta |
| Echenagusía, Carlos | Cuba | Madrid |
| Echt (in German style) | Russia (areas) | See Jemtschoujin |
| Echt im Block geprüft Infla Berlin (+forged twice) (boxed). Note | Germany (Infla 1923) | See Infla Berlin |
| Echt Infla Berlin (+forged twice) (in circle) | Germany (Infla 1923) | See Infla Berlin |
| Eckardt, Dr. Moritz | German States (Thurn & Taxis) | Garmisch-Partenkirchen 1950, BPP 1961 |
| Eckhardt, W. J. | Worldwide | US (?) forgery collector's mark |
| Eckstein | Czechoslovakia | See Ekstein |
| Economist, ESC | Worldwide | Economist Stamp Co (Edward Stern et al.), New York NY 1926 |
| ECM (?) | Poland (Przedborz) | . |
| ECPM | Japan | Expert Committee of the Philatelic Museum Foundation, Tokyo Japan. Note |
| Edgar, Capt. W. H. Adgey | Malaya and Burma (Japanese Occup.) | See Adgey-Edgar |
| Egtc (or Egte or Eqtc) | Fiume | . |
| Ehret, Dr. Karl Th. | German States (Baden) | Sinsheim-Ehret 1935, Freiburg 1950 |
| Eibenstein, Hubertus | German Cameroun and Togo (excl. GRI) | Berlin, BPP 1982–2005 |
| Eich | Germany (field post WW2) | Germany |
| Eichele, Martin | Worldwide | Basel, dealer (Philaclassica) 1985–, member of BPB, q.v. |
| Eichenthal (tall and narrow capital letters). Note | Estonia | Tallinn, used by the Eichenthal stamp store |
| Eichenthal (letters in a circle), Eichenthal (in two lines) | Estonia, Russia (areas) | Ewald E., Södertälje (Sweden) 1950, prev. Tallinn, dealer, circular mark in use 1920–30s |
| Eichenthal (low ordinary capital letters). Forged, note | Estonia, Latvia | Willem E., Kreuzwertheim a.M 1950, Stockholm 1961, prev. Tallinn, b. 1892, expert until early 1970s |
| Eichhorn, Florian. Certif. Note | Japan (excl. occ.s), Korea | Wiesbaden, b. 1958, BPP 1983– |
| Eid, Albert | Saudi Arabia, Turkey, etc. | Alexandria or Cairo (1949). Note |
| einf. C. A. (einfach = single) | Br. Colonies | See CA |
| Eisold, Lothar | Russia, France | Lahr (form. Dresden), 1930–2002, BPP 1990–2002 |
| EK in circle and downward arrow | Hungary etc. | [Flasch] |
| EKA | Germany (Marienwerder) | On forged |
| Ekstein, V., Vinohrady | Czechoslovakia | Prague-Vinohrady, pre-WW2, dealer |
| EL | Poland (Cracow 1919) | . |
| ela | Saudi Arabia | See Angeloglu, E. L. |
| Elbau, Peter. | Austria, Hungary, Rumania; (all –1918) | Fürstenau 2002, SBPV 1993– |
| Eldrup, Ebbe. Certif. | Iceland | Rungsted kyst (Denmark) 2001. Note |
| Eliades, Christa (forged) | Germany (Berlin) | Berlin, BPP 1996 |
| Elicabe, Ricardo E. | Argentina | Buenos Aires Philatelic Society |
| Eliot | Albania | Sir Charles Eliot? |
| Ell, Joseph | Portugal | Lisbon 1950, 1883–1957, AIEP 1954–57 |
| Elliott N.Y. | Worldwide (air mails?) | New York NY, dealers |
| Elmhurst Philatelic Society | Mexico | See MEPSI |
| Elo, Hannu | Finland (killer postmarks) | Tampere, b. 1948, Finn. Phil. Fed. 1990– |
| Emmel, F. | Germany (Infla), German States (Wurttemberg Official Mi 101–) | Stuttgart-Untertürkheim, BPP 1961 |
| Emery, Prof. Dr. W. O. | USA incl. locals | Crawfordsville (USA) 1897 |
| Engel, R. F., (also Fa R. F. Engel) (Robert) | German States (Saxony, and others), Heligoland | Hamburg 1897 1943, dealer, father of W. Engel |
| Engel, Walter, 2 (BPP), (both forged). Certif. | Germany and States (esp. Hamburg), Chile (first issue), Non-European (pre-1900) | Hamburg, 1914–82, BPP 1961, AIEP 1978–82 |
| Engels | Ukraine | Berlin, UPV |
| Enger, Hans (Johan) | Norway (excl. locals) | Biri (Norway), b. 1944, dealer, expert 1991–, AIEP 1998–, BPP 1995–, [FFE5, PE] |
| Engler, Peter Ernst. Certif. | Turkey | Owingen (Germ.) 1995, indep. expert. Note |
| Englert, Josef. Certif. | German States (Baden) | Aschaffenburg, BPP 1984 |
| Enigma Stamps | Australia | Dealers |
| Enseńat, Carlos | Spain and Colonies | Barcelona, COMEX 1983 |
| Erbig | Epirus | . |
| Ercegovic, Velimir; ('V.E' in circle) Certif., 2 | Yugoslavia (excl. locals), Italian occ. Yugoslavia, German occ. Yugoslavia | Zagreb d. c. 1992, BPP 1980, c. 1970–92, [Flasch] |
| Erdwien, Volker | Danzig (incl. Port Gdansk), Memel | Elze, BPP 1996at, Carlos |
| Erdödi, Dr. János (in script) | Fiume | Trieste 1943, dealer, [Flasch] |
| Ernst, Adolf, two-line B. B. B. in circle | Carpatho-Ukraine | Europe, later Palo Verde CA (USA), dealer, reported to use B.B.B. in circle |
| Ernst Belgrade, M. | Hungary, Yugoslavia | [Flasch] |
| Erös, Aladár | Yugoslavia (SHS) | Szabadka |
| Errington & Martin, 2. Note | Worldwide | S. Hackney 1926, dealers c. 1920–50 |
| ESC, Economist | Worldwide | Economist Stamp Co (Edward Stern et al.), New York NY 1926 |
| Escalada-Goicoechea, Eduardo (Works as member of committee.) | Spain and Colonies, Carlist Wars | Madrid, b. 1952, dealer, expert 1986–, CEM 1996, AIEP 2000–, [FFE4, PE] |
| Esrefbey (= Esref Bey?) | Thrace | Turkey |
| Esser, Dr. | Hungary | Budapest, dealer, [Flasch] |
| Estoppey, Edouard S. | Switzerland, Europe, USA | Lausanne 1926, dealer, off. expert 1949 |
| Estoppey, Maurice E. | Switzerland, Europe (pre-1900) | Lausanne, 1915–98, dealer, AIEP 1965–98 |
| Estudio 20 | Latin America | Committee of Buenos Aires dealers |
| Evans, Major Edward B. | Worldwide | England, 1846–1922, RPSL 1894–. |
| Evans-de Violini, Mrs. Lois M. | Japan | Oxnard CA 2002, ISJP expert. Note |
| Ey, Dr. Eduard ('EyEd') | German Colonies & PO, Switzerland | Germany?, 1887–1967 |
| F | Worldwide | Can mean 'Forgery' |
| Fabergé, Agathon ('AgF'), 2, 3. Photo | Russia, Baltics, Finland | Helsinki, 1876–1951, famous philatelist, FFF exp. comm. |
| Fábián | Hungary | Also on forged, [Flasch] |
| Falešný | Czechoslovakia | 'Forgery' in Czech |
| Falk, Arthur | Worldwide (Zeppelin) | New York State, dealer |
| Falkowski, Józef | Poland | Warsaw 2000, Polish Fed. –c.2005 |
| Falsch | Worldwide (forgeries) | German for 'Forged' |
| Falsificat, Falso, Falsum | Worldwide (forgeries) | Latin or Spanish for 'Forgery', 'Forged' |
| Faludi, S., Berlin | Ukraine, etc. | Berlin, dealer |
| Fanngi(?), S. | Ukraine | . |
| Farrington, Jeremiah A. | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Faruk Palace Stamp Collection | Egypt | Arabic: Saraya Al-Koubbeh |
| Faux | Worldwide (forgeries) | French for 'Forged', see also Fournier |
| Fekete, Guido | Hungary, Austria | Vienna 1926, dealer |
| Fennia-Post Helsingfors, 2. Note | Finland | Helsinki, dealers (Alfons Sundqvist), in use 1930s, Oy Fennia-Post Ab 1920–c.1950 |
| Ferchenbauer, Paul | Worldwide | Vienna 1950 1961 |
| Ferchenbauer, Ulrich, Dr. Certif. | Austria (–1938 incl. PO abroad), Austria (DDSG), Lombardy-Venetia, Rumania, Europe & Worldw. (pre-1900) | Vienna, b. 1941, son of Paul, expert 1975–, BPP 1991, AIEP 1996–, VÖB, [FFE5, PE] |
| Ferrari Fabergé | Worldwide | Item sold on the Ferrary or A. Fabergé auctions (?) |
| Ferrari, A. P. | Argentina (Zeppelin) | Buenos Aires, dealer? |
| Ferreira, A(rmindo) Simoes | Portugal | Lisbon 1926, dealer, [Mi 1935] |
| Ferroud Paris, A. | France and Colonies | Paris, dealers f. 1889 |
| FF (Rumanian monogram) | Rumania (Regatul), Hungary (Debrecen) | See Juretzky |
| FFF | Finland, Europe | See Frim. För. i Finland |
| Fi | Finland | See Filatelia Oy, Ab |
| FI | Hungary | See Floderer |
| Fieandt, Einar | Finland (Aunus) | Helsinki, 1879–36, SF expert |
| Fiecchi, Alfredo E(rmo) | Italy and States, Worldwide (pre-1900) | Milan 1950, 1900–82, BPP 1961, AIEP 1954–82. Note |
| Field, David | Russia (areas) | London 1926, 1871–1926, prominent dealer, also on forged. |
| Filatelia Garcia | Spain, France | See Garcia |
| Filatelia Madrid | Spain | Same as above? |
| Filatelia Oy, Ab ('Fi') | Finland | Helsinki, dealers (Gunnar Kreipke?), in use 1930s |
| Filatelia Krakow | Poland | See Philatelia Krakow |
| Filatelia Lwow | Poland | See Filatelista Lwow |
| Filatelia San Giusto | Italy, Trieste | See San Giusto, Filatelia |
| Filatelia Sevillana | Spain | Sevilla, dealers |
| Filatelista ... Bratislava | Czechoslovakia | Bratislava, dealers |
| Filatelista Lwow | Russia (areas), Ukraine, Poland (Cracow 1919) | Lwow (then in Poland), pre-WW2, dealers. Mostly on forged [Stallberg] |
| Filatella | Czechoslovakia | . |
| Findeisen, Hans | Germany (1945–6 locals and OPDs) | Worms, BPP 1980 |
| Fischbein, Karl | Fiume | . |
| Fischer Wien VII., H. | Hungary etc. | Vienna, dealer, [Flasch] |
| Fischer Arad | Hungary | Arad (Hungary), dealer, [Flasch] |
| Fischer, Dr. Peter | German States (Bremen) | Scheessel, b. 1937, BPP 1984 |
| Fischer, R. F. | German Colonies | . |
| Fischl, Dr. | Czechoslovakia | Dealer (Reimannová-Sladková), pre-WW2 |
| Fischmeister, Dr., Ladislav | Czechoslovakia | Czechoslovakia, later USA, 1923–2003 |
| Flasch, Dezsö | Hungary (occ. ovpt.s), Rumania (Regatul), Czechoslovakia (Posta 1919), Yugoslavia (SHS), Fiume (ovpt) | Budapest 1998, d. 2006, expert on overprints, [Flasch] |
| Fläschendräger, W., Halle Flä, Hall Fl, WF | Germany East (Bezirk 1948) | Werner F., Halle/Saale 1961 |
| Flatheim, Geir O. | Norway (1886–93 issue, 20 mm) | Kristiansand S, expert 2002–. Note |
| Fleck, Vladimir ('V.F.') | Yugoslavia (ovpt.s), Bosnia & Herzegovina, Croatia, Montenegro, Serbia | Zagreb d. 1970s, 1885–1969, expert c. 1940–69, AIEP 1958–69 |
| Fleiner, Udo | Germany (1916–45) | Stutensee-Büchig, BPP 2001 |
| Fleming | Germany (pre-1900) | . |
| Flemming, Wolfgang (forged) | German States (Baden, NDP, Prussia) | Leipzig, BPP 1991–2013 |
| Flierl, Harry C. | Worldwide | Buffalo, APS expert (chairm. 1942–54) |
| Floderer, István ('FI') | Hungary | [Flasch] |
| FMC | Hungary | [Flasch] |
| Foley, Joseph E. | Ireland | Riva MD (USA) 2001 |
| Forbin Paris, Alfred | Europe, Worldwide (revenues) | Paris, pre-WW2, dealers, [Flasch] |
| Fosaneanu, Paul | Rumania | Bucarest 1897 |
| Four (the number in a circle) | Worldwide | The stamp has been repaired |
| Fourcaut, Jean-Claude | France, Belgium, Monaco | Le Vésinet (France) 2002, dealer. Note |
| Fournier, François | Worldwide (all forgeries) | Marks on front or back of stamps from the Geneva albums of samples |
| Frajola, Richard C. | USA (postal history), BNA, Br. Colonies | New Mexico, Profess. Stamp Experts 2000 |
| François | Jordan (Transjordan) | On forged. Jean Louis F., d. 1941 ? |
| Françon, Robert | France | Latour de Salvagny (France), 1932–99, AIEP 1992–99 |
| Franek, Jaroslav | Czechoslovakia | Prague 1950, 1900–60, expert –1940s |
| Frangakis, Jean | Syria (Arab Kingdom), Saudi Arabia (Hejaz) | Alexandria, 1920s, dealer, on forged [APAI] |
| Frank, E. D. | Great Britain | Frankfurt 1897 |
| Franke Berlin | German States | Berlin |
| Franke, Wilfried | Tibet, Chinese PO Tibet | Cologne, 1947–2007, BPP 1996 |
| Fränzl, Karl (Franzl, Fraenzl) | Ukraine | Vienna, 1920 |
| Frascati | Greece | . |
| Frégnac, Émile | France | Paris 1943. Note |
| Frenckell, Karl von | Finland | Dresden pre-WW2, Kronberg i.Ts 1950, 1880–1952 |
| Frese | Fiume | . |
| Freudenstein, S. | Heligoland, Luxembourg | Frankfurt 1897 |
| Frey, Ch. Th. | German States (Baden), Switzerland | Freiburg/Br., BPP 1961 |
| Frey, Leopold | German States (Bavaria), Germany (excl. Infla) | Deggendorf/Ndg 1961, 1898–1964 |
| Freymuth, Arthur ('AF' in manuscript) | Finland? | Helsinki, d. 1940, dealer |
| Freyse, Gustav ('GF'). Advert. | Albania, Ukraine | Hannover, d. 1921, dealer |
| Friebe, Hans | Italian States (Papal States) | Freiberg 2003, Berlin, BPP 1991 |
| Friedberg, Richard | USA, BNA, Br. Colonies | Profess. Stamp Experts 2000 |
| Friedel, A. | German States (Brunswick), Ukraine | Vienna, collector, on genuine, [UPNS] |
| Friedel, Erich | Poland (Cracow 1919) | Halle GDR, d. 1979, expert 1975–79 |
| Friedemann, Albert | German Col. & PO abroad, Finland, E. Rumelia, etc. | Leipzig, 1867–1933, dealer (Senf?) |
| Friederich, Rudolf | Spain and Colonies | Hagenau i.Els. 1897, [Mi 1935] |
| Friedl (in script), Otto W. Friedl | Worldwide | New York NY (prev. Vienna), 1878–1952, son of S. Friedl, expert 1935–, Friedl Expert Comm. f. 1948, [Brühl p.483, APS]. |
| Friedl, Ing. (= engineer) | Yugoslavia | Maybe Rudolf Friedl |
| Friedl, Rudolf | Austria, Western Ukraine | Vienna 1926, 1862–1942, dealer, brother of S. Friedl |
| Friedl, Sigmund | . | Vienna, 1851–1914, also a forger [Tyler] |
| Frim. För. i Finland, 2 | Finland, Europe | Frimärkssamlarföreningen i Finland's expert committee, Helsinki, 1931–c.1955 |
| Frimmel, Sepp | Germany (field post), Austria | Braunschweig 1950 |
| Frimärkshuset (= Frimaerkshuset) | Sweden | Stockholm 1949, dealers (E. Lundström) |
| Frischer, 2nd vers. | Spain, Hungary | Maybe Norbert Frischer, Vienna 1943 1949, dealer |
| FSPL (in script) | Luxembourg | Fédération des Sociétés Philatéliques du Grand-Duché de Luxembourg |
| FT | Rumania | . |
| FTF Rio | Brazil | Rio de Janeiro, dealer |
| Fuchs, R. | Hungary | . |
| Fukui, Kazuo | Japan and areas | Japan, ECPM (q.v.) 2001 |
| Fullgraf, Heinrich | Germany (Soviet occ. locals) | Mölln, BPP 2014– |
| Fulpius, George(s), Dr. ('G.F.' ?, GF in manuscript) | Italian States, Greece, Finland, Germany, Europe, Worldwide | Geneva 1949, 1886–1955, official expert 1949, AIEP 1954–55 |
| Funck | Germany (field post WW2) | Germany |
| Furuya, Yoshikazu | Japan and areas | Japan, Secretary ECPM (q.v.) 2001 |