| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
1764 b |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
18 |
| Hawaiian, Philatelic Society (Prüferkommission) |
Attest |
Scott |
18 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
18 |
| BCSC, Belgian Congo Study Circle (Arbeitsgemeinschaft) |
Attest |
Scott |
18 a |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
18 a |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
18 A |
| Crowe, William T. (Sonstiges) |
Attest |
Scott |
183 |
