I do not know about this one. I will opt-out and allow another expert to answer.
Hi, my name is*****'m a certified appraiser, and I'm happy to help.
Just to clarify--you mean the black and white piece in the geometric pattern?
It does have somewhat of a feel of Acoma pottery, but Acoma would have a plain terracotta or white interior and base. Wouldn't be glazed black like this appears to be. It's also a bit horizontal/vertical for Acoma, which tends to incorporate diagonals.
I think this is a modern decorative pottery.
It's unsigned--when and where did you get it?
It's theoretically possible, but it's an atypical pattern. Navajo pottery would have the black interior, but the striping is odd for Navajo.
No signature to be found anywhere within the pattern?
Without a name, as mid-20th century Navajo pottery with an atypical pattern, the value would be $200-$250.