| Schlegel, Andreas (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
17 c - 20 |
| Brettl, Maria (AIEP (Association internationale des experts en philatélie)) |
Befund |
Michel |
17 c; 18 |
| Flemming, Wolfgang (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
17 c; 18 |
| Stegmüller, Franz (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
17 c; 18 |
| Stegmüller, Franz (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
17 c; 25 a |
| Ossa, Mikko (Sonstiges) |
Attest |
Michel |
17 Cb |
| Bach, Jean-Paul, und Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Michel |
17 d |
| Hettler, Dieter (BPP (Bund Philatelistischer Prüfer)) |
Befund |
Michel |
17 d D |
