| BPA, The British Philatelic Association Limit (Prüferkommission) |
Sonstiges |
Scott |
3 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) |
Sonstiges |
Scott |
3 |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
33 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) |
Attest |
Scott |
537 i |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
607 ii |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) |
Attest |
Michel |
726 b |
| Maresch R., & Son (Händlergarantien) |
Attest |
Sonstige |
89xxxii |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) |
Attest |
Scott |
9 |
