This is an original WWI U.S. manufactured M1917 helmet that was converted to an M1917A1 by the United States government during a reconditioning process that first began in 1936, prior to McCord's new production line of 1941 manufactured M1917A1 helmets. Affixed through its front is its original USMC Eagle Globe & Anchor device. In addition to the EGA, the helmet retains its original factory paint and cork texture. The interior's heat stamp of ZA222, denotes U.S. WWI production by the Crosby Manufacturing Co. It retains its original leather liner and OD#3 (khaki) chinstrap. The chinstrap exhibits the early cast brass buckle and box stitching. The M1917A1 was seen atop the heads of Marines fighting on Wake Island, Bataan, and even during the early days of Guadalcanal.