I recently inherited a metal helmet from my grandfather. At the present time i can't remember the story of how he came across this helmet, but i will add it later. I am from Canada & I am not sure if this helmet is Canadian or American. And i am unsure of the era.
The strap has been added by my grandparents, but i think the spring type strap on the left is original (not 100% sure tho)
Any help would be great.