Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 86:
Description
1931 (September 18-19), 2nd SAF cover, franked by four stamps, including vertical pair of the Royal couple 2fr and two air post values (total C.v. $368 for used stamps off cover), tied by Triesenberg ”14.IX.31” ds, Friedrichshafen connection and violet confirmation markings, Cape Verde ”31.AGU.31” arrival markings on front and reverse, mostly VF and rare franking, Sieger #129, Est. $300-$350, Scott #107, C2, C6
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