Quote Originally Posted by bruce.desertrat View Post
....A couple million were produced for Civil Defense use in WWII, so it's likely this is what they're making, as the familiar Mk1 GI Helmet was in production by '42. .....
The height of the crown makes me wonder if they were indeed civil defense helmets on the Zuckerman pattern, which was basically a modified Brodie using cheaper steel and adding more crumple space above the head to compensate.