This is an original pre-WWII German M1931 helmet liner system. The leather liner is a size 57; to be paired with a size 64 helmet shell. It features a reinforced aluminum band and manufacturer's date of 1938. The leather is faintly marked with its original owner's initials 'W. M.' The liner comes complete with its original drawstring and chinstrap. The chinstrap exhibits an early aluminum buckle and matching production date of 1938. This would be an ideal liner system for an M35 helmet.
Pre-WWII German M35 64/57 Helmet Liner & Chinstrap