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

Soviet Union Stamps of 1924-40

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Start price: $750

Buyer's premium:

1927, black surcharge (type I) 8k on Postage Due stamp of 7k orange, litho printing with perforation 12, very fresh and nice, full OG, trace of hinge mark, VF and rare, Est. $1,200-$1,500 , Sc. #362 var