Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Austria - 1933 (May 14), Graz - Maribor First Flight 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