Chinese ,Song Dynasty, the steep, conical sides with a subtly concave band just below the tapered rim, covered in a thick, opalescent chestnut-colored glaze suffused with lustrous black streaks emanating upward in fine lines from the well and around the exterior,the glaze pooling in an uneven line issuing three thick drops revealing the dark gray stoneware body, the base incised with the two character phrase "Gonyyu"(imperial tribute),come with original Japanese box H: 2.6"(6.5cm) D: 4.8"(12.3cm) Provenance: Sotheby`s New York, March 21 2018,important Chinese art, lot 671 Reference: similar bowl carved with"gongyu" marks include one from the Yangdetang collection sold at Christie`s Hong Kong, 30th NOV 2016,lot 3157,and another sold in sotheby`s Hong Kong, 1st-2nd June 2015,lot 589 Condition: in overall good condition , free of damage