Set of 4 Signed Studio Pottery Relief Art Tiles

Set of four studio pottery ceramic tiles, each approx. 6" x 7". Features raised abstract and hand motifs with iridescent blue and green glazes on a matte dark clay body. One tile is signed with an incised monogram, possibly "RW". Slab construction. Good condition with minor edge wear typical of the medium; white residue on unglazed backs.