| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Michel |
4 |
| RPSVI, Royal Philatelic Society of Victoria Inc (Prüferkommission) |
Attest |
Stanley Gibbons |
4 |
| RPSVI, Royal Philatelic Society of Victoria Inc (Prüferkommission) |
Attest |
Stanley Gibbons |
4 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
4 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
ohne Angabe |
4 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
4 |
| FNIP - Federation of, national and international stamp dealers (Prüferkommission) |
Attest |
COB / OBP / OCP |
4 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
4 |
