door In case the sender needed a proof of delivery he could pay for an Avis de réception. The addressee had to sign this Avis de réception and the post office of arrival stamped the card on the day of arrival and sends the card back to the sender.
This Avis de réception was meant to be send originally on May 4, 1944 but stamped only December 30 in Winsum (Gn.) when the express letter was actually send off. The (Dutch) addressee was at Lager Eiche in Oberndorf (Neckar), a forced working camp of the Germans. The letter arrived only on February 14, 1945 and arrived back in Winsum (Gn.) as late as June 5, 1946. It is stamped by U.S. Civil Censorship/Germany.
