| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
18 a |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
18 a |
| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
18 a |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
18 b |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
18 sa |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
181 a |
| Bach, Jean-Paul, und Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Stanley Gibbons |
182 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
186 |
