| Ceremuga, Krzysztof (Sonstiges) |
Attest |
Stanley Gibbons |
O12 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
O17 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
O17 a |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
O17 b |
| Ceremuga, Krzysztof (Sonstiges) |
Attest |
Stanley Gibbons |
O21 |
| Ceremuga, Krzysztof (AIEP (Association internationale des experts en philatélie)) |
Attest |
Stanley Gibbons |
O27 a |
| Ceremuga, Krzysztof (Sonstiges) |
Attest |
Stanley Gibbons |
O337b |
| Ceremuga, Krzysztof (Sonstiges) |
Attest |
Stanley Gibbons |
O47 b |
