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

Russian Semi-Postal Issues

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Start price: $500

Buyer's premium:

1923, Philately for the Labor, silver surcharge 4r+4r on 5000r violet, a single with enlarged margin at right, full OG, NH, VF, C.v. $1,800, Est. $800-$1,000 , Sc. #B42