07-04-2016 07:07 PM
It is an interwar commercially produced "Himmler Helmet", so called because Himmler is often seen in pictures wearing the combat weight version of this style shell, which had WWI style vent lugs. This one is probably a lighter gauge steel, and originally had screen vents instead of the frankenstein lugs. With the neck flap tabs on the liner it was probably a fire police helmet. This style shell was used by the Luftschutz, police and fire police units, factory police, etc.
The metal is the same grade / thickness as a standard WW1 combat helmet, possibly a bit thicker even. I assumed at first that it was a weird combat helmet where the lugs had been removed. Doing some of my own research I thought it was a Himmler at first, too, but Jacob Caputo of Alexandre & Sons said this, yesterday:
"What you have is actually not a true "Himmler helmet" always it looks pretty similar to one. This type of helmet is known as an Austrian style M16. It is one of the many commercially produced helmets from the 1930s. These helmets were worn by the Hermann Goring police, the SA and a few other organizations. The helmet never had lugs. It had screen vents where the holes are. They probably lot at some point. From what I can tell your helmet is original. I do not think it was used by the Fire department. That color makes me think one of the German police organizations."