Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Liechtenstein - Zeppelin Flights - 1930 (November 11), Netherlands Flight postcard, franked by 5 air post stamps of the first issue (C.v. $273 for stamps on cover), tied by Schaan ds, Friedrichshafen ''10.11.30'' connection, blue and violet confirmation markings, mostly VF, Sieger #98, Scott #C1-5