| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
03 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
068 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
07 A a |
| Holcombe, Peter (Sonstiges) |
Attest |
Stanley Gibbons |
1 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
1 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
1 |
| Sismondo, Sergio (Sonstiges) |
Attest |
Stanley Gibbons |
1 |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) |
Attest |
Stanley Gibbons |
1 |
