| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) |
Attest |
Scott |
537 i |
| Moorhouse, Brian (Sonstiges) |
Attest |
Scott |
54 a; 62 a |
| The China Stamp, Society, Inc (Prüferkommission) |
Attest |
Scott |
55 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
55 L 3 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
551 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
56 |
| Sadri, Mehrdad (Sonstiges) |
Attest |
Scott |
567 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
58 X 2 |
