Sample 1:

Similar size to WW1 helmet (11 inch “diameter” across longest side), but with 1954-dated WW2 style liner.  Liner is size 7-1/2. Has post-1943 “chocolate brown” paint and Mk2 chinstrap.  WW2 liners have no asbestos pads.

 

Sample 2:

Canadian.  1942 dated shell and has post-war olive drab repaint and post-war chinstrap.