| Comex, (Prüferkommission) |
Attest |
Edifil |
14; 15; 16 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
14; 37 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
14; 37 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
140 a |
| Raybaudi, Experts (Prüferkommission) |
Attest |
Sassone |
141 - 146; 147 - 149; 81 |
| RPSL, Royal Philatelic Society of New Zealand (Prüferkommission) |
Attest |
Stanley Gibbons |
141 a |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
142 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
142 |
