| Liapine, Victor (Sonstiges) |
Attest |
Michel |
|
| Frenkel, Dmitry (Sonstiges) |
Attest |
Zagorskij |
1381 |
| Raritan, Stamps Inc. (Sonstiges) |
Attest |
Scott |
149 |
| Mandrowski, Nicolai (Sonstiges) |
Attest |
Michel |
156 |
| Wassmann, Dieter (BPP (Bund Philatelistischer Prüfer)) |
Attest |
Michel |
1575; 1577; 1580; 1581; 1582 - 1584; 1589; 1590 |
| Frenkel, Dmitry (Sonstiges) |
Attest |
Zagorskij |
1898 |
| Leupold, Wolfgang (VÖB (Verband Österreichischer Briefmarkenprüfer)) |
Attest |
Michel |
20 |
| Raybaudi, Experts (Prüferkommission) |
Attest |
Sassone |
20/I; 21/I |
