| Raybaudi, Experts (Prüferkommission) |
Attest |
Sassone |
38; 40; 43 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
382 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
3895 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
39 |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
39 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
39 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
39 |
| BPA, Expertising Limited (Prüferkommission) |
Sonstiges |
Scott |
39 a |
