Original World War 2 German Erkennungsmarke (“Identity Disc”) of “3.Battr.Res.Scheinw.Abt.148” which stands for 3. Batterie/ Reserve-Schweinwerfer-Abteilung 148, individual number 146. Formed in Köln, in June 1942 it was stationed in Vlissingen (Holland) and later in 1943 in Berlin. Condition as seen.