1936-45. In German, the Stahlrute, a telescopic iron whip which could be concealed in the pocket and extended with a flick of the wrist, was a deadly weapon used by the Sicherheitspolizei (SiPo) a sub-department of the SS (Sicherheitsdienst) whose mandate was to “find and eliminate enemies of the Third Reich”. It extends with two nesting springs within the cylindrical grip. The striking end is mounted with an iron terminal capable of breaking bones or delivering a mortal head wound. With original leather wrist thong (split at the fold). The butt cap with SiPo logo, partially cracked along the edge from the impact of collapsing the telescopic mechanism as is typical. Very rare.