Argentina: Airmails: 1930 (May 1) large printed Zeppelin envelope flown on the Europe-Pan-America fight to Germany, franked by 1930 Zeppelin overprints in blue 20c., 50c., 1p., 1p.80., 3p.60, green overprint 20c., 90c. and 1p., large violet cachet. Photo. (Image1)