A genuine U.S. Army/USMC ERDL (Engineer Research and Development Laboratory) M1 helmet cover. The ERDL leaf pattern camouflage was originally developed by the U.S. in the late 40's and was not used on helmets until the end of the Vietnam War by the USMC, this camouflage is the brown dominant 'Highland' variant that is in excellent condition, and has the DLA (Defense Logistics Agency) ink contract markings dated 1981. Hand notation graffiti to side and front.