| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
3 LB 1 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
3 X 3 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
3; 15 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
30 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
30 A |
| Bileski, Kasimir (Händlergarantien) |
Attest |
Scott |
302/314 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
3054 e |
| Crowe, William T. (Sonstiges) |
Attest |
Scott |
31 |
