Hello Loco, and welcome to the Forum. This helmet is odd. The Wappen Alludes me, it reminds me of a Militär Beamte helmet, and the hardware would match. I do not know. My personal best guess would be maybe a Hessian Militär Beamte, or Military Official. However the spike does not look right to me. I'm interested to see if anyone else has some useful input on this. This is an interesting piece.