Antique Native American Bowls

I have no ide what these are, other than Southwestern Indian artifacts. I bought them from the estate of a wealthy art dealer / collector. The larger of the 2 has been broken and repaired. I think these are very old and was told they were removed from an archeological site by collectors. The larger measures 10 1/8" X 4 3/8" and the smaller 4 1/8" X 5". These are very old and their condition reflects this, so bid as you see fit. Offered at low starting bid.