| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
6; 7 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
60 a |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
607 ii |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
61 |
| Raritan, Stamps Inc. (Sonstiges) |
Attest |
Scott |
616 A |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
62 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
62 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
62 X 3 |
