"WW2 German Original"

I don't know how someone can describe something as "WW2 German Original" when it has a Nato Stock Number stamped on top of it!

Ww2 German original MG42 -MG53 ammo box. | eBay

It's on E-Bay. E-Bay is an evil anti-firearm ownership empire.
I don't see an NSN. I think the '10/66' matters though.
Can't imagine why he won't "post' to Canada either. Ammo cans aren't evil here, yet.