| Kaiser, Pierre (AIEP (Association internationale des experts en philatélie)) |
Attest |
COB / OBP / OCP |
37 |
| Lindekens, Philippe & Thomas (Sonstiges) |
Attest |
COB / OBP / OCP |
37L |
| Balasse, Willy (Sonstiges) |
Befund |
COB / OBP / OCP |
38 - 41 |
| FNIP - Federation of, national and international stamp dealers (Prüferkommission) |
Attest |
COB / OBP / OCP |
4 |
| Soeteman, Corneille (Sonstiges) |
Attest |
COB / OBP / OCP |
435 Aa |
| Michaux, Albert (Sonstiges) |
Attest |
COB / OBP / OCP |
48 |
| Tavano, Mario (Sonstiges) |
Attest |
COB / OBP / OCP |
5 |
| Lindekens, Philippe & Thomas (Sonstiges) |
Attest |
COB / OBP / OCP |
5 |
