Air Mail cover 1931 (12 Sept.) Third South America Flight XU5 to U.S.A., bearing Air 1P., 2P. and 5P. and showing pictorial "LUFTSCHIFF GRAF ZEPPELIN/3.SÜDAMERIKAFAHRT 1931" cachet in blue-green, together with Hungarian violet "ZEPPELIN UTJÁN" cachet. Sieger 133. Photo