| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
129 c |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
13 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
13 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
13 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
13 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
13 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
13 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
13 |
