| Buchsbayew, Paul (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
1 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
1 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
1 a |
| Weiss Expertizing International, . (Sonstiges) |
Sonstiges |
Scott |
1 A |
| Moorhouse, Brian (Sonstiges) |
Attest |
Scott |
1 a |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
1 LB 3 a |
| Solari, Alberto E. (Sonstiges) |
Attest |
Scott |
1; 2 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) |
Attest |
Scott |
10 |
