An excellent example of a genuine complete Vietnam War era U.S. M1 helmet. This M1 steel pot was manufactured by Ingersoll who made helmets from 1965 to 1968 for the U.S. during the Vietnam War, and has an early heat stamp number of: I-2935, with original chin strap that has anchor markings. The brown P64 liner is in excellent shape and was made by Marmac, ink DSA (Defense Supply Agency) contract markings to the suspension webbing and was made in May 1969. The genuine U.S. headband/sweatband has ink DSA contract markings and was also made in 1969. The nape strap is genuine U.S. with faded contract details, early variant made in the 1960's. The genuine U.S. Mitchell cover is the rarer twill variant that retains its colours and is contract marked 9005 and was made in 1965, around the outside of the cover is a genuine U.S. post-Vietnam War elastic helmet band with ink markings to front. A very nice complete M1 helmet.