| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
2 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Sonstiges |
Scott |
2 |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
2 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
2 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
2 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
2 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
2 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
2 |
