Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 13:
Description
1931 (June 18), Dornier Do X Flight pre-printed cover from Salvador to Porto Alegre, franked by five stamps, tied by Salvador ”18.VI.31” ds, black flight marking, ”21.JUN.31” arrival postmark of Porto Alegre on reverse, mounted on page from a Collection, VF, Est. $200-$250, Scott #C17, C18 x2, C19
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