Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Friday, May 5, 2023 at 3:00 PM UTC
Lot 1298:
1918, black overprint (type 10) on imperforate 20k blue and red, neat corner cancellation, VF and scarce, expertized by U.P.V. and others, this stamp is not listed in the Catalog, Est. $150-$200
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