DARMSTADT 23. 612 (last day), airmail stamp 20 Pfg (with tear affixed) together with 5 Pfg Germania on picture postcard "arrival of the Postal service air ship Swabia" with shops postmark "sib Moss, Karlsruhe Baden Baden Geneva" (Karlsruhe, Kaiserstraße 96, shop for postcards and art prints) and greeting text to Freiburg i. Br. To the baron Shilling from Cannstatt