| Karásek, Jan (AIEP (Association internationale des experts en philatélie)) |
Sonstiges |
Scott |
B 19 a |
| Rendon, Alex (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
C 1 |
| Bolaffi, Giulio (Sonstiges) |
Attest |
Scott |
C 1 - C 10 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
C 1 - C 6 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
C 1 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
C 10 |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Scott |
C 10 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
C 13 |
