| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
3054 e |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
31 |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
31 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
31 a |
| RPSVI, Royal Philatelic Society of Victoria Inc (Prüferkommission) |
Sonstiges |
Stanley Gibbons |
31 c |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
31 L 2 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
31 var |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
310 a |
