Zeppelin Flight. 1933 (October 14-17), Chicago (Century of Progress) Direct Flight registered postcard from Tunis to Brazil, franked by four stamps, including 10fr black, Friedrichshafen ''14.10.33'' connection, red Flight marking and Pernambuco ''17.X.33'' arrival ds on reverse, VF and rare, Sieger #238, Est. $750-$800 (Image)