Here is another "cover" scan with a stamp on it.
This is a "by Graf Zepplin" cover sent from the Century of Progress Expo in Akron Ohio, October 28, 1933. Rear shows Sevilla, Spain roller cancel, November 7, 1933, and finally a New York GPO November 14, 1933 return cancel.
So if this is real, it took 17 days round trip from Ohio to Spain to New York.
Interesting cover, No?


Enjoy
