History of Aviation, Rare Stamps and Postal History of the World, Part 3
Lot 1369:
1920, black-and-white imperforated photo proofs of 1hr- 200hr, complete set of 14, very fresh and choice, no gum as issued, VF and very rare especially in complete set, each value expertized by Z. Mikulski, Est. $1,500- $2,000 , Bulat #V27-40
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