Infantry Assault Badge in Silver (Infanterie Sturmabzeichen in Silber).
Maker marked M.K. 1. MK= Metall und Kunststoff. This is a rare maker.
The Infantry Assault Badge in silver was introduced on 20 December 1939 by Generaloberst 'Walther von Brauchitsch', for award to all ranks of non-motorized, Infantry and Mountain Infantry units who participated in three different assaults on three different days