But another input laid the doubts to rest: "I am convinced it is Maricopa, not San Juan. The wall thickness, the clay and the design all are characteristic of Maricopa.  I think what may have fooled you was that the inside of the bowl was not stone polished, but left in the natural state. Had it been polished, it would have the same sheen as the exterior tan color. Normally, a bowl would be polished on its inside. The careless painting is just related to the potter who painted it. Not all potters are created equally."  Alexander E. Anthony Jr. of the Adobe Gallery, Santa Fe, NM