| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
142 a |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
142 a |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Michel |
142 XB |
| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Michel |
142XB |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
143L5 |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
144 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) |
Attest |
Scott |
1442 b |
| NPC, National Philatelic Centre (Prüferkommission) |
Attest |
ACSC: Australien-Commonwealth-Spezialist-Katalog |
145 |
