This is an original early-WWII U.S. low pressure St. Clair manufactured M1 helmet liner. It features a rare green painted interior, aluminum rectangular washers, a first pattern rayon suspension, and a wonderfully intact stationary leather liner strap. These early characteristics date the liner's production from April to May 1942; these two months were the only time in which liners with green painted interiors were being produced, making this an exceptionally rare item. It has recently been outfitted with an original rayon headband and neckband. The headband is a size 7 1/8 and the neckband is a size 3. Both accessories match the liner's suspension quite well. The liner's exterior exhibits its original early-war flat olive drab factory finish. This rare liner would display very nicely when paired with an early-war helmet shell.