This is an original WWI British manufactured MKI helmet that was converted to an M1917A1 by the U.S. government during a reconditioning process that first began in 1936, prior to McCord's new production line of 1941 manufactured M1917A1 helmets. The helmet features original olive drab paint and textured finish. The helmet's interior brim is stamped HS 114, denoting 1916-1919 production by Hadfield Ltd., Sheffield. Its original leather liner and khaki chinstrap are still intact. The chinstrap exhibits the early cast brass buckle and box stitching, while the liner retains its original leather drawstring and crown pad. The crown pad is marked, presumably, with its original owner's nickname, "BANKO". The chinstrap appears to be marked "N.I.L." The M1917A1 was seen atop the heads of Marines fighting on Wake Island, Bataan, and even during the early days of Guadalcanal.