"National Sozialistische Deutscher Studentenbund" (National Socialist German Students’-league) A cast alloy lapel pin, in the form of an elongated diamond, 23mm tall and 15mm wide, within which is a mobile swastika. Red, black and white paint  is all intact. A vertical pin-back device is on its reverse, underneath one end of which is an embossed with the RZM logo, and "M1/15 for the firm, Ferdinand Hoffstätter, Bonn am Rhein
VG