File:WW2 Norway (andre verdenskrig i Norge) Visor cap (høylue skyggelue politilue) and steel helmet (stålhjelm M31) of NS Nasjonal Samling Fascist party controlled State Police 1942-45 (Statspolitiet) etc Hjemmefrontmuseet Rakkestad 2021.jpg -
M31 hjelm. Original? - Samlerforumet
Military equipment of the 20th century: Norwegian M31 helmet (Post War - civil defence)
HELMET M/31 - NORWAY - VERY GOOD CONDITION - WWII - Global War Museum i Munkedal