The Volokolamsk RSFSR and Soviet Union Specialized Collection, Various Russian Stamps and Covers of other owners
Lot 596:
1961, Helicopter over the Kremlin, black surcharge 6k on 60k ultramarine, horizontal pair, right stamp without ”6” variety of surcharge (positions 19-20 of 80-stamp sheet), full OG, left stamp has somewhat gum foxing in places, right one (error) is completely all right, NH, VF and scarce error, which occurs in a small part of print run only, N. Mandrovski certificate, Est. $1,500-$1,800, Scott #C98, var
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