Lot 951. A small 'Jian' black-glazed bowl, Song dynasty (960-1279). Diameter 3 7/8  in., 9.9 cm. Estimate 1,500 — 2,500 USD. Lot sold 1,875 USD. © Sotheby's

the deep rounded sides supported on a short straight foot, covered overall with a lustrous black glaze, thinning at the rim with some russet streaks extending downwards, the glaze stopping irregularly above the foot to reveal the reddish-brown stoneware body.

Sotheby's. Saturday at Sotheby's: Asian Art, New York, 16 Sep 2017