| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
21 b |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
211 a |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
213 a |
| Comex, (Prüferkommission) |
Attest |
Edifil |
216 B - 229 B |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
217 a |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
217 a |
| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
22 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
22 |
