This is marked on the bottom NEW MEXICO.  It looks exactly like it is Loma of Arizona?

There is not much information on Loma of Arizona online.

Beautiful cup with a hand-painted turquoise blue inside.  The outside has a hand-paint Thunderbird style on it,

along with painted black speckles all over.  This holds 8-fluid ounces.

In excellent condition with NO chips, cracks, or utensil marks.  

Measurements:  4-1/2" wide across (from handle to other side of mug) x 3-1/4" wide mouth x 3" tall