| Raybaudi, Experts (Prüferkommission) |
Attest |
Sassone |
6 - 8 |
| RPSL, Royal Philatelic Society of New Zealand (Prüferkommission) |
Attest |
Stanley Gibbons |
6 A |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
6 a |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Michel |
6 a |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
6 a; 9 a |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Michel |
6 b |
| GPS, Germany Philatelic Society (Prüferkommission) |
Attest |
Michel |
6 I |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
6 KB 5 b |
