Art pottery flower pansy ring steel blue & gray 6" signed

Art pottery flower pansy ring mostly in a steel-blue color and dark gray horizontal lines. Approximate measurements = 6" across X 2-1/4" tall. The artist incised their mark on the bottom but it is impossible to read. Seller doesn't know when nor where it was made. Very good condition - no chips, no cracks, inside is clean, no glaze crazing. Will ship from a home with cats.