This helmet, and the other one I have listed, were brought back from the war by an American soldier. From what I researched, it may have belonged to a Policeman or firefighter. The soldier has signed his name on it's interior.
There is a cork-like material coming from underneath the upper liner. The item "Original signed German Helmet Feuerschutzpolizei police fireman Mohawk WW2 Army" is in sale since Tuesday, June 14, 2016.
This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Hats & Helmets". The seller is "unclejunksthomson" and is located in Thomson, Georgia. This item can be shipped to United States.