United States 1933 Graf Zeppelin Century of Progress Germany to Chicago Cover. Cover franked with three 50c Century of Progress (C18), tied by New York machine cancel (Oct 4), with dual GRAF ZEPPELIN FLIGHT / DISPATCHED FROM FRIEDRICHSHAFEN and LUFTSCHIFF GRAF ZEPPELIN triangular flight cachets, endorsed “From Friedrichshafen to Chicago, Illinois”, with exposition arrival backstamp (Oct 26), top two stamps affixed slightly over top edge of cover, a desirable flight and attractive franking. Member of the Canadian Stamp Dealers Association & Philatelic Traders Society. Are the responsibility of the purchaser. Our Guarantee to You… We’re proud to offer collectors an attractive selection of fine and rare stamps, postal history, and ephemera. We seek out quality material for our clients. _gsrx_vers_1436 GS 9.0.5 (1436).