Switzerland: 1929, Flight to Zurich-Duebendorf, handing in for transport Friedrichshafen, photo postcard "count ZEPPELIN high alpine areas flights" with airmail stamps mixed franking from "ROMANSHORN 24. X. 29" to Friedrichshafen with arrival postmark "Zurich airfield from 2. November and impressive Cachet, good condition, expertized Grabowski