It is a WW2 MKII helmet with the Royal 22ième Régiment ( Van Doos ) flash on the side. The shell it's british made and mark Fisher and Ludlow Birmingham 1940.
It's possible to observe the residue of the old camouflage made by two tone of green paint.
This helmet was found in the middle of 1800 helmet shell acouple years ago. It's untouch.
Thanks for looking.