| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
11 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Stanley Gibbons |
11 |
| Exfima, Comision de expertos (Prüferkommission) |
Attest |
Edifil |
11 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
11 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
11 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
11 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
11 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
11 |
