| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 27 |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 28 (10) |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 30 d |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 30 c |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Kurzbefund | Michel | 30 (Probedruck) |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 31 a |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 32 b |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 32 b |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 33 |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 34 |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 36 |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 39 A |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 41 B |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 41 B |
| Böttger, Lars (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 142 |
| Demuth, René (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | 31 b |
| Demuth, René (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | 31 c |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 2 e |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 2 c |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 3 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 4 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 4 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 6 a |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 7 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 8 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 8 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 8 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 9 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 10 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 10 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 10 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 11 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 11 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 14; 16 a und 19 b |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 17 b |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 18 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 19 a; 23 b; 25 und 31 a |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 19 b |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 22 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Befund | Michel | 25 IIa |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Michel | 26 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Prifix/Yvert | 11 |
| Demuth, René (BPP (Bund Philatelistischer Prüfer)) | Attest | Prifix/Yvert | 28 |
| Demuth, René (Sonstiges) | Attest | Michel | 6 b |
| Demuth, René (Sonstiges) | Attest | Michel | 20 b |
| Diena, Enzo (Sonstiges) | Attest | Michel | 39 |
| Diena, Enzo (Sonstiges) | Attest | Michel | 41 A |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Michel | 1 |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Michel | D 6 I B |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Michel | D 8 Ia |
