Original M31 zinc helmet liner. Metal is solid, leather is soft and pliable. The item “WW2 German zinc M31 helmet liner, size 64/57, 1943″ is in sale since Saturday, February 8, 2020. This item is in the category “Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Hats & Helmets”. The seller is “cart32tfs” and is located in Titusville, Florida. [Continue]