| Experts, Philatelic (PE) (Prüferkommission) |
Attest |
Michel |
1 a |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
1 a |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Michel |
1 a |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Michel |
1 a |
| Friedl Expert Committee, (Prüferkommission) |
Attest |
Michel |
1 a |
| RPSL, Royal Philatelic Society (Prüferkommission) |
Attest |
Michel |
1 a |
| Indian States Expertizing Service Inc., (ISES) (Prüferkommission) |
Attest |
Stanley Gibbons |
1 a |
| Verband Schweizer, Philatelistenvereine (Prüferkommission) |
Attest |
Michel |
1 a |
