This is what seems to be an original German paratrooper helmet. The chinstrap I believe is a replacement.
I dont know a lot about these, but I tried to capture as many details as I could in the pictures. I have been told by several different people several different things. Shell is original but liner assembly is not. The whole helmet was made by FJ Werke (which are RARE to find as they are highly sought after because they are the closest replicas on the market).Only the chinstrap was replaced. The item "WW2 German FJ Paratrooper Helmet ckl66 M35 M40 M42" is in sale since Friday, March 13, 2020.
This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Hats & Helmets". The seller is "southern-surplus2016" and is located in Clinton, Mississippi. This item can be shipped to United States.