Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 63:
Description
1922, two stamps with black inverted surcharges 50 on 100h green and 100 on 200h violet, full OG, NH or LH (C8a), VF, expertized by Blaha, Gilbert and others, C.v. $300 as hinged, Pofis #L4-5Pp, CZK8,000,Scott #C7a-8a
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