Austrian Flight OF 1931 – This card was mailed and posted in Budapest, Hungary on July 4, 1931, and flown to Friedrichshafen, Germany where is received a front cancellation dated July 12, 1931, same day was placed on board the Graf Zeppelin and flown on the Austrian round flight. On board it received a blue triangle cachet. Then received a special postmark dated July 12, 1931.

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