Four Blue and White Pottery Plates, England, late 18th century, China, 19th century, including two Worcester Porcelain/Dr. Wall plates, each with scalloped rims, decorated with reserves of blue Oriental landscapes and flowers, on a powder blue ground, (one cracked, one with rim chips), dia. 7 3/4 in.; together with two octagonal Chinese export porcelain plates centered with blue underglaze Asian landscapes, (one with hairlines and rim chips), dia. 9, 7 1/2 in.