Hi Tim(?),
I would steer clear of this one: the point looks wrong (repro or wrong type), the colour of the point is different than that of the back spine (i.e. one or both have been replaced), the cockades don't look original to me (but hard to see from pictures), and the chin strap looks like a repro.
The E.B R.R. 53(?) marking doesn't seem to correspond to a Württemberg unit (might correspond to Ersatz Btl RIR 53 in VII A.K., but here I'm unsure), so the marking doesn't match the Wappen.
[-X [-X [-X
Lars