| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Scott |
120 a |
| Sydney Philatelic Research, Drury, Michael (Sonstiges) |
Attest |
Scott |
125 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
129 |
| Moorhouse, Brian (Sonstiges) |
Attest |
Scott |
13 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
13 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
13 |
| Scheller, Pascal (Sonstiges) |
Attest |
Scott |
13 |
| The Philatelic Foundation, (Prüferkommission) |
Sonstiges |
Scott |
13 a |
