Need some help on this Hessian Pickelhaube.

[Winodog]

Blackened (or blued) JzP helmet body.

 

[Sandmann]

Blackened (or blued) JzP helmet body.

I‘m sorry to say that this is not a JzP helmet, but a blackned cuirassier helmet body.
Here you can see the differences between JzP and cuirassier helmets:

• Example JzP helmet for enlisted men
• Example cuirassier helmet for enlisted men

I have to agree with the others that it seems to be a parts helmet.

 

[Winodog]

You’re all right. I was carried away there for a moment and thought I had solved the puzzle.
Please accept my apologies.

 

[Sandmann]

Don't worry, this has happened to many of us. I also know this euphoria and also the awakening