Graf Zeppelin non-flown souvenir postcard
Albert Lehmann was a steward on board the Graf Zeppelin in 1928. With access to the red onboard marking, he created this souvenir on October 11, 1928. Because the outward/return flight of the America flight did not go via his hometown—Offenburg, Germany—but flew a route sixty kilometers south, there was no chance for a drop. Someone did Lehmann a favor and postmarked these cards to order with a backdated postmark.
For further information, see Heinz Oberdrevermann, "Geschichte und Geschichten um Albert Lehmann," SBZ (Swiss Stamp Magazine) October 1993: 305-307. Also search www.arago.com for other Albert Lehmann mail flown by zeppelins.