| NPC, National Philatelic Centre (Prüferkommission) |
Attest |
ACSC: Australien-Commonwealth-Spezialist-Katalog |
81 B |
| Philatelic Federation of South Africa, (Prüferkommission) |
Attest |
Stanley Gibbons |
81 c |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
81 X I |
| KGVI-Expertising, (Prüferkommission) |
Attest |
Stanley Gibbons |
813 a |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
82 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
82 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
82 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
83 |
