Sellingerowie (marriage)
The Sellingers were a Jewish couple who collaborated with the Gestapo. According to the version given by Tadeusz PankiewiczTadeusz Pankiewicz (1908 - 1993) - Polish pharmacist, graduate of the Jagiellonian University, owner of the "Pod Orłem" (polish: "Under the Eagle") pharmacy in Krakow, the only pharmacy operating in the Krakow ghetto. He came from a family with patriotic traditions. For his activity in aiding and rescuing Jews, he was awarded the medal "Righteous Among the Nations". He described his wartime memories in a book entitled "Apteka w getcie krakowskim" ("The Cracow Ghetto Pharmacy"). and [Aleksander Biberstein], they were in the service of SS-Obersturmführer Kurt Heinemeyer, the head of the subreferate IV/A/1. The wife was supposed to eavesdrop on German political talks in cafes and inform the Gestapo about it. She knew the Polish language poorly. Her husband, in turn, was denounced Jews hiding on Aryan papers, as well as Poles helping Jews and keeping their belongings for the time of was.
Being aware that they would probably share the fate of their victims after the war, they decided to flee to Hungary. Sellinger left first to find out about the situation. After some time he returned for his wife. Heinemeymer, when he found out about this, called them over and said he could help them by thanking them for their good work. He gave them a sealed letter to the chief of police in Nowy Targ, who was to help them cross the border and further to Hungary. When the Sellingers returned the sealed letter to the chief of police in Nowy Targ, it turned out that Heinemeyer had ordered him to shoot them, which he did. Heinemeyer wanted to try them out and see if they would open the letter and save themselves, or whether they would trust him to the end and die.
Whether this story, told to Pankiewicz by Bouska, Schupo's commandant, is true or not, it certainly shows to what extent the collaborators were dependent on the Germans and how much they trusted them.
Witold Mędykowski "Przeciw swoim. Wzorce kolaboracji żydowskiej w Krakowie i okolicy"