Handmade Ceramic Bowl with Blue and Ivory Glazed Interior and Dramatically Flared Rim

A unique handmade art pottery bowl with twisted base and flared, crimped rim with richly glazed interior in shades of blue and ivory and an unglazed exterior.  The bowl measures 8 1/2" across the rim, 3" across the base, and is 5" high at the highest point.  The piece is signed by the maker and the condition is good, although there is what appears to be a coffee stain on the base covering the artist's signature.