Chinese Dingyao Black Glazed 'Oil Spot' Double-Gourd Vase. Finely potted with a larger globular bulb below merging to form a smaller bulb above beneath a short cylindrical neck, covered overall in a lustrous black glaze, highlighted with a pattern of iridescent silvery 'oil-spots', the glaze stops neatly above the base revealing the granular dark brown body. {Height: 7 3/4 inches (20 cm)}. Property from a San Francisco Collection.