The German troops were in Kiestinki until late 1943 early 1944 so yes there would be M42 helmets also remember replacement soldiers were still being sent from Germany up to 1944 so most of the replacement troops would have the M42 helmets ,I know most helmets found were M35 and M40 but i have also seen SS m42 helmets found on both the Russian and Finnish sides of the Frontier
Bookmarks