Nice find. It does look old, but might not be Cumberland due to the lack of angle on the shoulders, and the straight base, not concave. I have seen a few broken Clovis preforms that looked very similar to your piece, maybe broken during manufacture. JMHO. Copena may be a good call as well, interesting find. Thanks for the view.
After taking a better look, that piece seems to have to much finish work for a preform. Good luck..