Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Liechtenstein - Zeppelin Flight - 1931 (June 10), Vaduz - Lausanne Flight postcard, franked by 1fr olive black, tied by red confirmation marking, the same day Vaduz and Lausanne date stamps are alongside, VF, Sieger #110A, Scott #C7