Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 22:
1933 (May 14), First Flight Graz – Maribor postcard, addressed to Italy, franked by Pilot 80g gray green, Austrian and Yugoslavian Flight markings, Graz ”14.V.33” ds is alongside, Rome arrival marking on front and reverse, VF, Est. $100-$150, Scott #C22
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