| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Michel |
28 A |
| Crowe, William T. (Sonstiges) |
Attest |
Scott |
28 A |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
294 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
295 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
295 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
30 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
30 A |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
3054 e |
