| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
11 |
| Philatelic Federation of South Africa, (Prüferkommission) |
Attest |
Stanley Gibbons |
167 |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Yvert et Tellier |
19 |
| Sismondo, Sergio (Sonstiges) |
Attest |
Stanley Gibbons |
39 |
| Philatelic Federation of South Africa, (Prüferkommission) |
Attest |
Stanley Gibbons |
54 a |
| Rendon, Alex (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
64 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
7 |
| Ceremuga, Krzysztof (Sonstiges) |
Attest |
Stanley Gibbons |
84 a |
