This mysterious m1 style helmet liner that I got with my Danish m48 helmet, at first I thought it to be Danish by the crown and CF mark but then there is
Original WWII Danish Model 1923 Helmet - Adapted for Fire Service – International Military Antiques
WWII Danish M1923 Combat Helmet | Proxibid
What was the reasoning behind the distinctive design of the Danish M1923 helmet? What were its advantages? - Quora
Helmet Collector on X: "Danish M39 - Worn by police and palace guard during and after #WW2. There would have been an emblem on the front http://t.co/eophf0s6wF" / X
Danish m23/41 helmet - YouTube
Denmark - ASF - Danish WW2 mod. 1923 helmet with ASF logo - Catawiki
Danish M23/38* – Steel Helmets of the World Wars
WW2 German, Soviet, Allied militaria, uniforms, awards, weapons history. War relics forum
How effective were WW2 helmets? - Quora
Denmark) Q64 M40 Danish WW2 reissued “Lokal Forsvars Region II” helmet with decal