Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 747:
Description
1936, Pioneers Helping Post, photo-proofs of 1k-15k in black-and white, complete set represented on a piece of postcard format,, design is stronger and clear then for issued stamps, 1k and 2k with visible ”Dlia Pisem i Gazet” (For Letters and Papers) on a mail box, other small differences presented, no gum as produced, NH, VF and very rare, an issued set is included, Caffaz certificate, Est. $1,500- $2,000, Scott #583-86
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