Original (not reproduction) US Army Vietnam War period M1 helmet with liner, The liner is circa 1961-1969 manufacture. The liner has a US Govt leased mold-in stamp "US 28" Headband markings are contract dated 1969 as is the liner suspension. The helmet has heat stamp number 4102 which indicates the manufacturer Parish Division of Dana Corporation from 1968 to 1970. Complete with original Mitchell pattern camo cover with Contract DSA - 1 - 4540-64-C indicating 1964 production. Original and now scarce Vietnam War period elastic band is attached. Very good used condition.