| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
4 b |
| Seeger, Wolfram, Jaeger, H. (Prüferkommission) |
Attest |
Michel |
4 b ZW |
| Raybaudi, Experts (Prüferkommission) |
Attest |
Sassone |
4 e |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Michel |
4 II |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
4 LB 21 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Stanley Gibbons |
4; 3 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
40 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
40 |
