I got this Mk1*, can't resist them at the moment.
Made by Vickers 1916-17, chin strap lugs dated 1938, can't find maker/date on the liner but it's the largest size they do, 7 3/4's as there are no rubber buffers.
It's obviously lost it's nut & bolt & been replaced by a type of rivet, which in a way defeats the object of being a Mk1*.
To one side is an black/yellow/red flash which I believe is not for Belgium, but I know the Norfolks had the same colours?
On the other side of the helmet is another flash, black & white, again ? So any idea's.