GE C43-45 Graf Zeppelin Chicago Flight used

1, 2, 4 RM Set Issued for the Graf Zeppelin visit for the 1933 Chicago Century of Progress flight. This set was complimented by a US issue. Overprint reads Chicagofahrt, Weltausstellung (Chicago Flight, World Exhibition). The airship had the newly-added swastika on its top and bottom tail fins.