Viet Cong helmet, knife, punji stake North Vietnamese Army NVA VC ARVN

Viet Cong helmet, machete/knife, and punji stick. Don't have any history on them. Machete blade measures about a foot long and is named along with the handle. Punji stake is also around a foot long. Helmet is a commercial made Chicom bamboo hat that was painted dark green and once bore a badge on the front. Named on the interior in what appears to be Chinese. Likely came from a PRC aid worker sent to North Vietnam. These helmets are still made today but this one shows some age.