Hi Darren,
Glad to have you back. Your helmet is a CanadianMkII made by the Canadian Lamp Company of Windsor, Ontario in 1942 (obviously). The number stamp could possibly be an inspector's stamp.
Many post war Canadian MKIIs were painted with a glossy outer paint. I have one with that gloss outer paint in OD.
Unfortunately, I can't help with the painted insignia.
I have included a picture of my chinstrap with the Canadian Broad Arrow stamp.
Hope this helps.
BEAR (BDY)
Attachment 89749