Air Mail cover 1931 (12 July) "Polarfahrt" XU5 to U.S.A. bearing Air 1P., 2P. and 5P., showing "LUFTSCHIFF GRAF ZEPPELIN/POLARFAHRT 1931" cachet in red, together with "BRISE-GLACE"MALYGUIN"/ARCTIQUE" d.s. in black and Hungarian violet "ZEPPELIN 1931.évi/ÉSZAKISARKI ÚTJA" cachet. Fine. Sieger 119. Photo