| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| Kaiser, Pierre (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | 5 A |
| Hoffner, Johannes (BPP (Bund Philatelistischer Prüfer)) | Kurzbefund | Michel | 11 C |
| Hoffner, Johannes (BPP (Bund Philatelistischer Prüfer)) | Kurzbefund | Michel | 13 C |
| Balasse, Willy (Sonstiges) | Attest | Michel | 34 b |
| Balasse, Willy (Sonstiges) | Attest | Michel | 129 - 142 |
| Belgische Liga, vor Postzegelhandelaren (B.L.P.) (Prüferkommission) | Attest | Michel | 135 - 149 |
| Raybaudi, Experts (Prüferkommission) | Attest | Michel | 164 |
| Trachtenberg, Henri (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | 164 |
| Kaiser, Pierre (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | 333 - 341 U |
| Kaiser, Pierre (AIEP (Association internationale des experts en philatélie)) | Attest | Michel | 333 - 341 U |
| Simon, Joachim (Sonstiges) | Attest | Michel | 366 |
| Heubach, Heinz (Händlergarantien) | Attest | ohne Angabe | |
| Balasse, Willy (Sonstiges) | Attest | ohne Angabe | 8 N 2 |
| Berlingin, René (Sonstiges) | Sonstiges | Yvert et Tellier | 155 |
| Balasse, Willy (Sonstiges) | Befund | COB | 1 - V5 |
| Michaux, Albert (AIEP (Association internationale des experts en philatélie)) | Attest | COB | 1 e |
| Michaux, Albert (Sonstiges) | Attest | COB | 8 |
| Balasse, Willy (Sonstiges) | Befund | COB | 10 A |
| Soeteman, Corneille (Sonstiges) | Attest | COB | 12 |
| Balasse, Willy (Sonstiges) | Befund | COB | 38 - 41 |
| Michaux, Albert (Sonstiges) | Attest | COB | 48 |
| Michaux, Albert (AIEP (Association internationale des experts en philatélie)) | Attest | COB | 53 - 67 |
| Baete, Jean (AIEP (Association internationale des experts en philatélie)) | Attest | COB | 117 |
| Soeteman, Corneille (Sonstiges) | Attest | COB | 333 - 341 |
| Soeteman, Corneille (Sonstiges) | Attest | COB | 435 Aa |
| Soeteman, Corneille (Sonstiges) | Attest | Sonstige | 31 |
| FNIP - Federation of, national and international stamp dealers (Prüferkommission) | Attest | Sonstige | 41 |
