'Nationalsozialistischer Deutscher Studentenbund' (NSDStB) Belt Buckle (Koppelschloß). The aluminum construction box buckle is neatly maker marked on the back with RzM M4/38 indicating production by the company of 'Richard Sieper & Söhne' in Lüdenscheid. The buckle is showing some normal period wear and is in overall very good condition. This is one of the scarcest third reich period buckles. Rare and hard to find original buckle, only the first such example I ever had on offer!