Estados Unidos
Automatically generated translation
Yvert 17(4). 1933. 50 green cents, four stamps. Graf Zeppelin from NEW YORK to LOS ANGELES. Marks GRAF ZEPPELIN FLIGHT / CENTURY OF PROGRESS / EXPOSITION and triangular LUFTSCHIFF GRAF ZEPPELIN / 1933-SUDAMERIKA-CHICAGO, in red and on the back FRIEDRICHSHAFEN transit roller, in green. MAGNIFICENT AND RARE.