| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
90 - 92 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
90 b |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
92 |
| Diena, Enzo (Sonstiges) |
Attest |
Stanley Gibbons |
92 - 93 |
| Longo, Bernardo (Sonstiges) |
Attest |
Stanley Gibbons |
925 |
| Longo, Bernardo (Sonstiges) |
Attest |
Stanley Gibbons |
925 |
| Longo, Bernardo (Sonstiges) |
Attest |
Stanley Gibbons |
925 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
96 |
