Dutch Nato M53...........
As rudders already stated Dutch M53, looks a nice period piece ,the netting and Hessian looks genuine to the shell, I assume an early model judging by the chinstrap too!
Thank you guys, just saw this...for a few dollars (in Hungarian money), might as well throw in a bid, see what happens
I had the same helmet with the same chinstrap when I was in the Dutch army in 1986.
Netherland M53 - Brendon's Helmets
Brendon's helmets has good reference photos of the Dutch M53
you could use a piece of black inner tube from a truck tire to go over the netting, thats a common practice used to hold covers or nets in place
no need to buy another net if you use a piece of tire tube