| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
14 |
| Sismondo, Sergio (Sonstiges) |
Attest |
Scott |
14 (12) |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
14; 37 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
14; 37 |
| Sismondo, Sergio (Sonstiges) |
Attest |
Scott |
140-143 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
143L5 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) |
Attest |
Scott |
1442 b |
| Raritan, Stamps Inc. (Sonstiges) |
Attest |
Scott |
149 |
