Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1

Worldwide Air Post Stamps and Postal History - Soviet Union

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Start price: $1,000

Buyer's premium:

1934, Civil Aviation, 80k purple, a single with perforation 10×13¾x13¾x13¾, printed on watermarked Borders and Rosettes paper, rough perforation at top as typical for these errors, neat Moscow CTO with full OG, VF and rare, N. Mandrovski certificate, Est. $1,500-$2,000, Sc. #C44 var