| Bach, Jean-Paul, und Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) |
Attest |
Michel |
12 IIa |
| Mohrmann, Edgar (Händlergarantien) |
Attest |
Michel |
12 IIa |
| Lange, Gertraud (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
12 IIa |
| Vaatz, Arnold (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
12 IIb; 8 I; 9 I; 12 aa; 13 a |
| Krischke, Gerhard (Sonstiges) |
Attest |
Michel |
12 III |
| Petry, Claus (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
12 III |
| Petry, Claus (BPP (Bund Philatelistischer Prüfer)) |
Befund |
Michel |
12 IV |
| Petry, Claus (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
12 IV |
