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Urkunden Prüfvereinigung: Sonstiges
Prüfer Art des Attestes Katalog KatalogNr. Gibbs, Robert M (Sonstiges) Attest Stanley Gibbons 251 a Gibbs, Robert M (Sonstiges) Attest Stanley Gibbons 253 Tillard, Jean-Jaques (Sonstiges) Attest Yvert et Tellier 253 D Gibbs, Robert M (Sonstiges) Attest Stanley Gibbons 254 a Tillard, Jean-Jaques (Sonstiges) Attest Yvert et Tellier 255 A Gibbs, Robert M (Sonstiges) Attest Stanley Gibbons 255 n Frenkel, Dmitry (Sonstiges) Attest Zagorskij 256; 257 Flack, Geoffrey (Sonstiges) Attest Michel 259