An excellent example of a genuine U.S. Vietnam War era M1C Paratrooper helmet with a scarce P55 Paratrooper liner. The M1 helmet was originally made between 1951 to 1953 by McCord and has a heat stamp number: M 64A, rear seam, with M1C paratrooper chin strap that physically attaches two male snap fasteners to the liner, chin strap has anchor marks to the metalwork. The U.S. P55 Paratrooper liner would have been made between 1955 and 1963 and was manufactured by Westinghouse Electric Company, liner is in very good condition overall retaining the original adjustable draw string, female snap fasteners either side to attach the helmet, has two A-straps either side with adjustable buckles for the open web chin strap, the U.S. leather chin strap buckle is anchor marked with black metalwork. DSA (Defense Supply Agency) ink contract markings to the U.S. sweatband that is dated 1968, ink manufacture markings on the genuine U.S. nape strap that was made in 1957. The genuine U.S. early Mitchell cover retains its vivid colours, one of the tuck-in flaps has been deliberately cut away to allow the cover to seat better between the helmet and liner, has an early contract number of 5656 dating it to 1964. A rare complete paratrooper helmet.