| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| Alcuri, Paul J. (Sonstiges) | Attest | Michel | 22 a |
| BPA, Expertising Limited (Prüferkommission) | Attest | Stanley Gibbons | 9 |
| Bach, Jean-Paul, und Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Michel | 2 b |
| Bolaffi, Giulio (Sonstiges) | Attest | Yvert et Tellier | 6 |
| Bolaffi, Giulio (Sonstiges) | Sonstiges | Michel | 5; 6; 8 |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | U 1 B; 10 b |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | U 7; 7 |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | U 9a; 19 a; 20 a |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | U 12; 19 b |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) | Befund | Michel | 17 c; 18 |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) | Befund | Michel | 19 ab |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 1 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 1 b; 6 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | U 1 A; 10 c |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 1 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 1 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 3 b; 5 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 3 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 4 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 5; 9 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | U 11 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 13 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 13 c; 18 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 15 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 16 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 16 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 17 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 17a; 23 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 17 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 17 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 19 a b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 20 c |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 21 a; 11 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 21 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 21 a; 15 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 22 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 22 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 22 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 22 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 22 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 5; 17 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 5; 10 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 6; 7 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 10 b |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 16 |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 17 c |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 19 aa |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 21 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 22 b; 19 a |
| Brettl, Maria (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 22 a; 13 a; 20 b |
