| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
|
| Richter, Heinzgeorg (Sonstiges) |
Attest |
Michel |
11 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
12 |
| Diena, Enzo (Sonstiges) |
Attest |
Stanley Gibbons |
12; 13 |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Stanley Gibbons |
13 |
| Gibbs, Robert M (Sonstiges) |
Attest |
Stanley Gibbons |
141 ag |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
15 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
156 a |
