| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
11 - 14 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
11 a |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
11 ac |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
11 b |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
11 b |
| Brettl, Schmitt (Prüferkommission) |
Attest |
Michel |
11 b |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
11 c |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
11 c |
