| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
24 L 2 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
26 L 1 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
3 L 2a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
3 LB 1 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
3 X 3 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
31 L 2 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
34 L 2 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
34 L 4 |
