| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
707 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
71 var |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
72 |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
73 L 1 |
| EFM, Expertización Filatélica de Madrid (Prüferkommission) |
Attest |
Edifil |
75 |
| APS, (American Philatelic Society) (Prüferkommission) |
Attest |
Scott |
75 |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
75 ab |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
77 |
