| H.S.H. Prince Albert II of Monaco |
Principality of Monaco |
| H.M. Queen Elizabeth II |
UK |
| Musée de la Poste |
France |
| Museo Filatelico e Numismatico della Città del Vaticano |
Vatican |
| Museumsstiftung Post und Telekommunikation |
Germany |
| National Postal Museum - Smithsonian Institution |
USA |
| Philatelic Collections of the Library and Archives of Canada |
Canada |
| Royal Museum for Central Africa |
Belgium |
| Stiftelsen Ringström Museum för Filateli |
Sweden |
| The British Library |
UK |
| Renzo Aldighieri |
Italy |
| Luis Alemany Indarte |
Spain |
| Reinhard Amann |
Principality of Monaco |
| Nino Aquila |
Italy |
| Fernando Aranaz |
Spain |
| Claes Arnrup |
Sweden |
| Giacomo Avanzo |
Italy |
| Helmuth Avi |
Switzerland |
| Alberto Barcella |
Italy |
| Jean-François Baudot |
Spain |
| Pascal Behr |
Principality of Monaco |
| Jan Berg |
Sweden |
| Adriano Bergamini |
Switzerland |
| Paolo Bianchi |
Italy |
| Giorgio Bizzarri |
Italy |
| Alberto Bolaffi |
Italy |
| Federico Borromeo d'Adda |
Italy |
| Giacomo Bottacchi |
Italy |
| Maurice Boule |
Principality of Monaco |
| Bouwe Brandsma |
Belgium |
| Ron R. Brigham |
Canada |
| Enzo Carnio |
Switzerland |
| Vikram Chand |
Singapore |
| Giorgio Colla |
Italy |
| Guido Craveri |
Switzerland |
| Antonio Cuesta |
Spain |
| De Raedt Gino |
Belgium |
| Claude Delbeke |
Belgium |
| Nestor Dewitte |
France |
| Romano Donnini |
Italy |
| David Feldman |
Switzerland |
| José Ma. Ferret Causadias |
Spain |
| Jeanne Fikry |
Egypt |
| G. Davit Franco |
Turkey |
| Luis Frazao |
Portugal |
| Tito Giamporcaro |
Italy |
| William H. Gross |
USA |
| Carlos Gutierrez Garzon |
Spain |
| Jonas Hällström |
Sweden |
| Svein Arne Hansen |
Norway |
| Alan Holyoake |
UK |
| Otto Hornung |
UK |
| Jan Huys-Berlingin |
Liechtenstein |
| Ad Indhusophon |
Thailand |
| Rolf-Dieter Jaretzky |
Germany |
| Pierre Kaiser |
Belgium |
| Velizar Kardosch |
Switzerland |
| Itamar Karpovsky |
Israel |
| Alfred Khalastchy |
UK |
| Kurt Kimmel |
Switzerland |
| Chris King |
UK |
| Vedat Kocak |
Turkey |
| Angel Laiz |
Spain |
| Jan-Olof Ljungh |
Austria |
| Francesco Lombardo |
Italy |
| David Lu |
China |
| Mara Marchetti |
Switzerland |
| Simon Martin-Redman |
UK |
| Patrick Maselis |
Belgium |
| Constantin Mattheos |
Greece |
| Peter Meyer |
Brazil |
| Amedeo Missaglia |
Switzerland |
| Frantz-Caspar Moldenhauer |
Norway |
| Bernardo Naddei |
Italy |
| Yigal Nathaniel |
Israel |
| Giangiacomo Orlandini |
UK |
| Gaetano Palmigiano |
Italy |
| Federico Pincione |
Italy |
| Jean-Claude Porignon |
Belgium |
| Ludvik Pytlicek |
Czech Republic |
| Omar J. Rodriguez |
USA |
| Rolf Rohlfs |
Germany |
| Michel Rozenblat |
France |
| Wade E. Saadi |
USA |
| Sergio Santachiara |
Italy |
| Angela Seghizzi Zanaria |
Italy |
| Mario Seminara |
Italy |
| Henk Slabbinck |
Belgium |
| Josep Soler Antich |
Spain |
| David Springbett |
UK |
| Jacques Stes |
Belgium |
| Olivier Stocker |
UK |
| Douglas Storckenfeldt |
Sweden |
| Donald Sundman |
USA |
| Jussi Tuori |
Finland |
| Paolo Vaccari |
Italy |
| Angelo Zanaria |
Italy |
| Mario Zanaria |
Italy |
| Alessandro Zanini |
Italy |
