This is an SS sleeve diamond badge, specifically the Schützenschnur (Shooting Award) variant. It features a black wool diamond-shaped backing with a silver embroidered target consisting of concentric circles above crossed oak leaves, a distinguishing insignia for marksmanship awards within the SS. The reverse shows a sewn-on construction method typical of period SS insignia. This badge was awarded to members of the Schutzstaffel (SS) during the Nazi era, primarily in the 1930s and 1940s. It signified proficiency in marksmanship and was worn on the left sleeve of the uniform.