Art pottery flower pansy ring blue with brown abstract 4" signed

Art pottery flower pansy ring blue with brown abstract pattern and here-and-there lines. Approximate measurements = 4"+ across X 1-3/8" 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.