Hi Marlo,
Welcome to the forum!
Imo a model 1895 for enlisted men, with the Wappen for a Grenadier Regiment.
The parts look original, but the chinstrap should be black on the outside, so probably replaced at some point in time with an early war version.
The inside doesn't seem to be tampered with, but the outside seems very polished (or maybe that's just the picture, my helmets also look brighter on pictures than they do "in hand").
Unfortunately the unit marking is not fully readible, would have been nice with a unit marking that is consistent with the Wappen.
Congratulations with your first Pickelhaube, imo you bought an authentic piece.
Regards,
Lars
EDIT: maybe you can take off the Wappen to show the helmet underneath? The Wappen sometimes leaves a "ghost" on the lacquer, and/or indentations that should fit with the Grenadier Wappen