| Raybaudi, Experts (Prüferkommission) |
Attest |
Michel |
14 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
14 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
14 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Sonstiges |
Scott |
14 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
14 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
14 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Yvert et Tellier |
14 |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
14 |
