| Rendon, Alex (AIEP (Association internationale des experts en philatélie)) |
Attest |
Stanley Gibbons |
14 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
18 |
| Knopke, Karl (Sonstiges) |
Attest |
Michel |
18 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
2 a |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
24 a |
| Raybaudi, Experts (Prüferkommission) |
Attest |
Scott |
3 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
3 a |
| Alcuri, Paul J. (Sonstiges) |
Sonstiges |
Michel |
3 I |
