Auction #93 Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World

1931 (August 27), Lausanne Flight postcard (real photo with Zeppelin Flight Around the World), franked by Rotary overprints on 20g, 50g and 1s, cancelled Innsbruck ''8.VIII.31'' ds, red oval Flight marking and Friedrichshafen connection of August 20 (too early), Lausanne ''27.VIII.31'' receiver, VF and scarce, Sieger #123 var, Est. $150-$200