A jade ritual disc (bi), Neolithic Period, Liangzhu Culture. Photo Sotheby's.

with small central aperture drill from both sides, the two sides polished to a smooth surface, variegated stone of pale green and light brown color, the edge slightly irregular.Diameter 9 in., 22.5 cm. Estimation 15,000 — 20,000 USD

Provenance: Acquired in London, 1980.
PROPERTY FROM THE SAM AND MYRNA MYERS COLLECTION

Compare a very similar bi in the Sir Joseph Hotung collection, discussed and illustrated in Jessica Rawson, Chinese Jade from the Neolithic to the Qing, London, 1995, p. 136, cat. no. 4:6.

Sotheby's. Fine Chinese Ceramics & Works of Art. New York | 18 Mar 2014, 10:30 AM - www.sothebys.com