| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
C 9 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
C2 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
CC 1 |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
CW S5 a |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
CW S5 a |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
D 1 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Michel |
D 44 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Stanley Gibbons |
D 44 |
