Lot 18. A green jade notched disc, bi, Neolithic period, Jiang-Huai region; d. 16.6 cm, 6 ½ in. Estimate: 400,000 - 600,000 HKD. Lot sold 819,000 HKD. Courtesy Sotheby's.

each side superbly worked with a subtly convex surface, all within a notched outline.

Property from the Hei-Chi Collection.

Literature: Jiang Tao and Liu Yunhui, Jades from the Hei-Chi Collection, Beijing, 2006, p. 30.

Note: Several Lingjiatan culture rings and huang with similar notches were excavated from Anhui, published in Lingjiatan yuqi [Lingjiatan jades], Beijing, 2000, pls 60, 62, 79. See also another serrated huang unearthed from Yingpanshan, Pukou, Nanjing, illustrated in Zhongguo yuqi quanji [Complete collection of Chinese jades], vol. 1: Yuanshi shehui [Primitive society], Hebei, 1991, pl. 64.