| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
77 b |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) |
Attest |
Scott |
78 |
| Raybaudi, Experts (Prüferkommission) |
Attest |
Michel |
78 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
78 a |
| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
781 s |
| The British Philatelic Association, Limited (Prüferkommission) |
Attest |
Michel |
79 |
| American Board, of Experts (Prüferkommission) |
Attest |
Stanley Gibbons |
8 |
| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
8 |
