Lot 51661 – Zeppelins: 1929-34, Group of 20 covers on different Zeppelin flights from Germany to Switzerland

Airmails – Zeppelins: 1929-34, Group of 20 covers on different Zeppelin flights from Germany to Switzerland mostly with two being internal Swiss flights, with better incl. 1929 1st Swiss flight sent unfranked with 20c postage due in Zurich, 1929 4th Swiss flight with Bern drop, 1929 5th Swiss Flight with Zurich drop, etc., an attractive group