Ernst Heinkel A.G. was a company that produced Heinkel aircraft for the German Luftwaffe.
The slave labor camp used prisoners from the Sachsenhausen Concentration Camp. The notes were produced in 1943 and are seen with perforations probably because they were printed as a sheet and simply torn off when issued. The notes were produced in .25, .50, 1, 2, and 3 RM. The notes are fairly scarce and counterfeits exist. The counterfeits were photo copies and the print quality is poor when compared to the genuine notes.