Lot   Cat.#
612  2428
1961, definitive issue, Coat of Arms and Flag, perforated proof of 4k in red (close to issued color), typo printing on white paper with stamp size 13.7x20.5 mm instead of 14x21.3mm for issued stamps, three toned specks on the left, fresh condition otherwise, full OG, NH, VF and extremely rare, D. Wassmann certificate, this proof is listed in the A. Pevzner Monograph "Definitive Postage Stamps of USSR"

Stamp Auction #76, February 03, 2018. Raritan Stamp, Inc