| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
20 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
20 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
20 |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
20 |
| Pfenninger, Brettl, Schmidt (Prüferkommission) |
Prüfermitteilung |
Michel |
20 |
| Hawaiian, Philatelic Society (Prüferkommission) |
Attest |
Scott |
20 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Stanley Gibbons |
20 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
20 a |
