| The Philatelic Foundation, (Prüferkommission) |
Attest |
Michel |
3 a |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
3 a |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
3 a |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
3 B |
| Comex, (Prüferkommission) |
Attest |
Edifil |
3 b |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
3 b |
| Exfima, Comision de expertos (Prüferkommission) |
Attest |
Edifil |
3 b |
| Exfima, Comision de expertos (Prüferkommission) |
Attest |
Edifil |
3 b |
