Luftpostbrief Chicago - Offenburg 13.01.41, mehrfach durch Zensur geprüft!

From the correspondence of the known Jewish Wertheimer family.
U.S. airmail issue for the first transatlantic flight, as franked single to the German Reich, with red additional cancellation "Trans-Atlantic route" and rarer censorship combination, Wide closure strips "open" and letter e with censorship-hand roller stamp without identification letter in black. Here almost only red Handroll stamps were used otherwise! In addition, the back 3 different file stamp.