Bidspirit auction | Soviet Union - Die Proofs

Soviet Union - Die Proofs Selection - 1977, Postal Official and Mail Transportation, die proof of 4k in green (issued in brown and green), engraved part of the design, artist G. Komlev, engraver T. Nikitina, printer's markings at sides, size 120x88mm, produced on wove paper without gum, VF and very rare, Est. $300-$400, Sc. # 4622