Here is an odd ball, A fixed bail M1 with WWII depot rigged straps. Unfortunately the liner is Korean / Vietnam era. I have seen these in pictures when I was a kid and would go with my dad to his barracks. There were pictures of the PA state police from different eras all through the hallway. Maybe I can get him to take a picture of one of them for comparison.
Also notice the dent in the side of the steel pot there is a small hole that goes through the liner and pushes out the metal of the shell that line up. Maybe someone shot it with a .22?