Urkunden Prüfgebiet: Sowjetunion

Prüfer	Art des Attestes	Katalog	KatalogNr.
Raritan, Stamps Inc. (Sonstiges)	Attest	Scott	53
Frenkel, Dmitry (Sonstiges)	Attest	Michel	54 I
Wassmann, Dieter (BPP (Bund Philatelistischer Prüfer))	Attest	Michel	553 Hy
Hovest, Ludger (VP (Verband Philatelistischer Prüfer))	Attest	Michel	587 U
Raritan, Stamps Inc. (Sonstiges)	Attest	Scott	616 A
Raritan, Stamps Inc. (Sonstiges)	Attest	Scott	63
Frenkel, Dmitry (Sonstiges)	Attest	Zagorskij	98 K a
Sismondo, Sergio (Sonstiges)	Attest	Scott	C 68