| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Michel |
3 I x b/d |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Michel |
31 x b/d |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
5 |
| Richter, Heinzgeorg (Sonstiges) |
Attest |
Michel |
5 a |
| Colla Asinelli, Giorgio (APFIP (Associazione Periti Filatelici Italiani Professioni.)) |
Attest |
Scott |
6 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Michel |
6 a |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
7 b |
