Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Soviet Union 1923-91

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Start price: $150

Buyer's premium:

1979, International Year of the Child, pencil sketch of 4k stamp, not approved design by artist G. Komlev, size 103x150mm, made on thick paper, VF and unique, the similar stamp was issued with design provided by artist I. Suschenko, Est. $300-$400, Scott #4752