Since I'm posting here now, Transitional 'M23' Adrian - probably used by the Spanish during their civil war (elaboration in captions) : r/Militariacollecting
Danish Militaria - Militariarg.com
WW2 Pre German Occupation Danish M23/39 Civil Defense Helmet And Liner
WW2 German, Soviet, Allied militaria, uniforms, awards, weapons history. War relics forum
WW2 German, Soviet, Allied militaria, uniforms, awards, weapons history. War relics forum
Dutch M23/27 Helmet - Militaria
DANISH ARMY M23 Ww2 Steel Helmet (No2) £52.59 - PicClick UK
Rare mint Danish EM M23/38 helmet dated January 1940 – fjm44
Danish M23 - M1 Helmet Adrian Helmet my helmets
Philip's Military Helmets - Highly interesting photo of the British rolling into Denmark, 1945, with Danish resistance members in the foreground. If one looks closely at the helmets that the Danish resistance