Nice find. The basal area, which is many times diagnostic for typing, looks to have some damage. Still, someone may be able to type it for you. Southfork would be a good one to chime in on this since he is on the west coast and is pretty good at typology; especially for far west finds.
Like the others have stated above.....needs the base for a certain ID on it but I'll add that a lot of Pintos have serrations like Welsbury's so at least it could be. Those serrations would also eliminate several types for me too.