According to the "Sterbebücher" (death records) of Auschwitz, Andries Ephraim was murdered there on 17 September 1942. This date differs from the official date of death as determined by the Dutch Ministry of Justice after the war. For the time being, the website joodsmonument.nl, list only the dates of death, as published at the time in the "Staatscourant" by the Ministry of Justice.
Sterbebuch Auschwitz (death record)
The official certificate of death by the Dutch Ministry of Justice nr. 576 dated 20 July 1950