| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Scott |
120 a |
| Rocha, Carlos Hernández (Prüferkommission) |
Attest |
Scott |
13 c |
| Diaz Paulos, Fausto (Sonstiges) |
Attest |
Stanley Gibbons |
159 a |
| Diaz Paulos, Fausto (Sonstiges) |
Attest |
Stanley Gibbons |
16 c |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
2 |
| Diaz Paulos, Fausto (Sonstiges) |
Attest |
Stanley Gibbons |
25 b |
| Behr, Bernard und Pascal (AIEP (Association internationale des experts en philatélie)) |
Attest |
Michel |
285-287 auf gelblichem Papier |
| The Philatelic Foundation, (Prüferkommission) |
Attest |
Scott |
3 |
