Auction 90, Session 2 - Worldwide Rare Stamps and Postal History

Soviet Union Stamps of 1923-40

The auction will start in __ days and __ hours

Start price: $75

Buyer's premium:

1930, Educational Exhibition, 10k olive green, printing oval over ”15” in bottom inscription (position 10), short one tip of perforation at top, full OG, light trace of hinge, VF, Sc. #435 var