| Sadri, Mehrdad (Sonstiges) |
Attest |
Scott |
587 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
59 L 2 b |
| PSE, Professional Stamp Experts (Prüferkommission) |
Sonstiges |
Scott |
594 |
| The American Philatelic, Expertization Service (Prüferkommission) |
Attest |
Scott |
5a |
| Colla Asinelli, Giorgio (APFIP (Associazione Periti Filatelici Italiani Professioni.)) |
Attest |
Scott |
6 |
| Paaskesen, Erik (Sonstiges) |
Attest |
Scott |
6 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
6 |
| Hawaiian, Philatelic Society (Prüferkommission) |
Attest |
Scott |
6 |
