| Brandon, David Expert Committee (Prüferkommission) |
Attest |
Stanley Gibbons |
89 d |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
89 k |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
89 L 1 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
9 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
9 |
| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
9 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Michel |
9 |
| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
9 |
