Germany Zeppelin Covers:

• 16 September 1933: The Graf Zeppelin (LZ-127) departed Friedrichshafen on its seventh South America flight of 1933. The cover features a blue cachet on the front and is marked "Unclaimed" in Buenos Aires, before being returned to Berlin.
• 9 June 1934: Graf Zeppelin flight from Karlsruhe to Buenos Aires. The cover bears a mixed franking of 175Pf and is properly cancelled.