Original WWI German M16 Steel Helmet – WWII-Era Reissue – Size 66. This listing is for an original German M16 Stahlhelm helmet from World War I, later reissued during the early 1930s-1940s period. The helmet is size-stamped “66” inside the shell and retains its iconic design with original side lugs, used during WWI for mounting a frontal armor plate. At some point in the early interwar or WWII era, this helmet appears to have been repainted in black, a common practice for reissued equipment. Faint traces of an old decal outline are visible on one side-likely from use by civil, paramilitary, or early military forces during the transitional period. WWI-era German M16 helmet. Interior size stamp: “66”. No liner or chinstrap. Black overpaint from later reissue. Ghost outline of decal visible (not intact). Surface wear, oxidation, and age-appropriate patina throughout. This helmet is offered as-is for historical display and collecting purposes. It has not been cleaned or restored. Please examine all photos closely to assess condition. Important Note: This item is a 100% original military artifact, presented for historical and educational purposes only. It is not intended to promote or endorse any ideology.