| Philatelic Federation of South Africa, (Prüferkommission) |
Attest |
Stanley Gibbons |
54 a |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
54a var |
| The China Stamp, Society, Inc (Prüferkommission) |
Attest |
Scott |
55 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
55 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
55 |
| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
55 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
55 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
55 c |
