This is a striking wide bowl by Maximiliana “Anna” Martinez, who was a sister of Maria Martinez.  It is one of her few black-on-red pieces.  The jar has a sun design (the center checkerboard) with a rainbow pattern above and an overall tablita appearance.  The shape is a classic one for Anna with a wide sharp shoulder.  The red is a very deep coloration on this bowl and the painting creative in style   It is unsigned but easy to attribute to Anna.  But more to the point on the attribution I looked at several signed pieces I had in the past by Anna and compared the angle of the base (when it is in the puki) and the angle of the sides.  The puki used and shapes are typically individual to each artist.  Note the last photo with this jar by Anna on one side and a black-on-black signed piece by her on the right.  It is then easier to see how this is one of the shapes she created for her pottery.  This wide bowl is in very good condition with no chips, cracks, restoration or repair.

Special Thanks to Russell Sanchez for his identification of designs and also working on the attribution for this bowl with me.

https://kinggalleries.com/san-ildefonso-pottery-innovators/

https://kinggalleries.com/san-ildefonso-pottery-innovators/