| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
259 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
259 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
259 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
26 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
26 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
26 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
26 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
26 |
