Nice razor! It doesn't look like a wedge - there appears to be a little hone wear along the spine, so there is a degree of hollow grinding to it. If it was a true wedge the makers name would have worn.

It's hard to tell from the profile photo, but the rear face looks straight like a wedge. If that is so, then its a microtome razor. Could just be the picture making it look like that on my monitor, though.

Scales look like horn to me - correct material for the period - I think I would replace them with something appropriate.

Regards,
Neil