Switzerland: 1929, world round flight, handing in for transport Friedrichshafen to Lot-Angeles, 25 C. Special postal stationery card with colorful additional franking (mostly airmail stamps) from Zurich -airfield 12. VIII. With on the back Leit and inventory postmarks, addressed to Chicago, stamps in part a little defective through glued close to the margin, despite the restrictions a decorative card with not frequent combination!