Because it was found in Northern Arizona, and also because of the serrations, I would say Bajada point. It's a Late Archaic atlatl dart point about 5000 to 6000 years old. It looks to be in perfect condition. A collector might pay $150 for it.
It's not a "paleo" point because the base is relatively narrow and slightly contracting. Earlier versions of this point are called "Escobas" and the bases were ground well into Archaic times. It also looks fairly thin, a characteristic of Late Archaic points of this design.
Bajada points were most likely made by ancestors of the Anasazi (Archaic - Basketmaker Era) while they were still primarily deer, antelope, and bighorn sheep hunters, long before the "Pueblo" peoples and before the Navaho moved in.
Edit: Looks like it also has characteristics of San Jose points as well. Hybrids of these types are possible.
