| Brettl, Schmitt (Prüferkommission) |
Attest |
Michel |
1 |
| Brettl, Schmitt (Prüferkommission) |
Attest |
Michel |
1 |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) |
Attest |
Scott |
1 |
| Brettl, Schmitt (Prüferkommission) |
Attest |
Michel |
1 |
| The Philatelic Foundation, (Prüferkommission) |
Sonstiges |
Scott |
1 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
1 |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
1 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
1 |
