| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
102 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
102 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
109 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
135 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
15 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
160 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
167 a |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
33 |
