Bidspirit auction | Soviet Union Stamps of 1924-40

Soviet Union Stamps of 1924-40 - 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 items were produced, A. Zverev certificate, Raritan Stamps guarantee, Est. $12,000-$15,000