Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 146:
1935, Moscow-San Francisco Flight, red surcharge 1r on 10k dark brown, position 25 of 25-stamp setting, full original slightly disturbed gum with very slight foxing, VF, Soviet Philatelic and several other guarantees, C.v. $500, Est. $400-$500 , Sc. #C68
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