| BPA, The British Philatelic Association Limit (Prüferkommission) |
Attest |
Stanley Gibbons |
H 29 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
H 30 |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
H 31 a |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Stanley Gibbons |
H II b |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) |
Attest |
Scott |
HI 81 var |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Facit |
HP I |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Stanley Gibbons |
I |
| BPA, Expertising Limited (Prüferkommission) |
Attest |
Michel |
I |
