| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
O 8 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
O 82 |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
O 88 a |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
O 97 a |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
O 99 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
O10 var |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
O17 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
O17 a |
