Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 3
Lot 1187:
1937, Architectural Projects, Palace of the Soviets, engraved Goznak (Soviet State Printing Plant) not accepted essay in slate blue with no value indicated, printed on thickened paper, size 75x45mm (stamp design size 33x21mm), no gum as issued, NH, VF and extremely rare, only a few such die proofs were produced, Raritan Stamps guarantee, suggested retail is $20,000
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