| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
445 |
| PSE, Professional Stamp Experts (Prüferkommission) |
Sonstiges |
Scott |
449 |
| Comex, (Prüferkommission) |
Attest |
Stanley Gibbons |
45 |
| NPC, National Philatelic Centre (Prüferkommission) |
Attest |
ACSC: Australien-Commonwealth-Spezialist-Katalog |
45 A |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
453 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) |
Attest |
Scott |
46 |
| Pfenninger, Brettl, Schmidt (Prüferkommission) |
Attest |
Michel |
46 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
46 |
