Slingshot, one problem is that unless the helmet has been untouched since the day it left the factory, not refinished in the field with another manufacturers decal, it is hard to tell without looking for manufacturing stamps.

Even some original helmets, untouched since day one may not have the 'correct' decal on it.

Btw, you can't rile these guys, they are just regular Joes talking German militaria!!