Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

Soviet Union - Large Die Proofs

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Start price: $250

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1976, Dmitry Shostakovich, Composer, 6k in dark violet blue, artist V. Koval, engraver V. Smirnov, printer’s markings at four sides, size 89x119mm, no gum as issued, VF, Est. $400-$500 , Sc. #4486