1924-1933 and Saar 3 air mail covers, Switzerland Treaty post, Amerikafahrt ZR3 "Los Angeles" (Sieger 20a), postcard from Luzern via Friedrichshafen 9-9-1924 to New York, fine/very fine (light tear upper left) and Liechtenstein  Third Ad Astra Africa Flight (SLH no. 30.12cL) cover from Triesenberg 29-11-1930 via Zürich to Fez (Maroc), very fresh and very fine, Saar Treaty post. Schweizfahrt, Focke-Wulf Möwe 5 francs orange brown on Zeppelin picture postcard from Saarbrücken 17-7-1933 via Bern to Friedrichshafen, very fine in envelope