| Channel Islands, Specialists Society (Prüferkommission) |
Attest |
ohne Angabe |
|
| Kobenhavns, Philatelist Club (Prüferkommission) |
Attest |
Facit |
|
| ISFILA (Istanbul Filateli, ve Kültür Merkezi A.S.) (Prüferkommission) |
Attest |
ohne Angabe |
|
| Confederate Stamp Alliance, (CSA) (Prüferkommission) |
Attest |
ohne Angabe |
|
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Michel |
|
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
ohne Angabe |
|
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
ohne Angabe |
|
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
|
