I acquired this named MK I a few years ago, heavy sand texture over a dark green paint and there appears to be a white painted insignia slightly visible. Manufacturer / Steel Supplier stamp, D/A 94 for James Dixon & Sons, Edgar Allan & Co. There is a rubber ring under the padding indicating a 1917 issued helmet. Named to Edward Harold Lobb 343358, enlisted May 8, 1918 with the 72nd (Queen's) Artillery Battery and was later transferred to the 2nd Canadian Tank Battalion on Sep. 30, 1918. Arrived in England on Oct. 18, 1918 but never saw action as the war ended soon after.
The 2nd Canadian Tank Battalion was organized in September 1918 and mobilized at Petawawa with most recruits derived from artillery personnel training at the camp.
While Edward never saw action, I really do like the association of this helmet with a Canadian tank battalion.
Hope you like it.