Graf Zeppelin Flight post card
The Graf Zeppelin left Friedrichshafen, Germany, on the morning of October 11, 1928, for its first flight to the United States. Shortly before flying over Basel, Switzerland, passengers and crew prepared a few items to be dropped over the city. Because there was not yet a post office with postmark on board, the red onboard cachet identified the flight.
Crew member Albert Lehmann prepared this card with German postage. The Swiss post office, however, did not accept German stamps and therefore applied a 'T' and the amount of postage due.