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: $200

Buyer's premium:

1970, Lenin, stamp of 50k in dark red from the souvenir sheet EXPO’ 70 International Exhibition, mirrored text at bottom, printer’s markings at four sides, size 89x118mm, minor violet ink splashes, still VF and rare, Est. $300-$400, Sc. #3709