5 Pcs. Grueby and Art Pottery. 1) Low bowl with dark blue matte glaze exterior, glossy green drip glaze interior, faint "Grueby Faience Co., Boston, USA" mark, some glaze damage in the interior, no hairlines, 8.25 in. dia. 2) Vase with "seal brown" glaze, impressed "Grueby Pottery" mark, excellent condition, 3.75 in. high. 3) Matte green cylindrical form vase, chip on rim, signed with impressed "Grueby Pottery" mark, 6.25 in. high. 4) Attr: Grueby, mustard glaze with carved leaf design, unsigned, excellent condition, 8.5 in. high. 5) Matte dark turquoise blue-green glaze vase signed with monogrammed initials "M.W.", excellent condition, 6 in. high. Weight: 7.25 lbs.