Letter. WW2. Air Mail letter. American Clipper.

Letter. WW2. Air Mail letter. American Clipper. Letter sent from Nissen, 211 Maine Street, Metuchen, New Jersey, USA for Mr. Nielsen, Resenvej 12, Skive, Denmark. Stamped in Metuchen April 23, 1940, 3:30 PM. The letter is opened / geöffnet of Oberkommando der Wehrmacht, when arrived in Germany and tried / Geprüft / censored. Ribbons and stamped. Franked with 30 Cent. Stamps and label for air mail. The letter is sent to Denmark just before the German occupation of Denmark, April 9, 1940, but arrived in Europe after. Rare letter !!!