| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
9 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
9 |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
9 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
9 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
9 |
| Brettl, Schmitt (Prüferkommission) |
Attest |
Michel |
9 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
9 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Yvert et Tellier |
9 |
