| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
25 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
25 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
259 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
259 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
259 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
26 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
26 |
| Rendon, Alex (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
26 b |
