Lot 137. A 'Jian' 'hare's fur' bowl, Song dynasty (960–1279). Estimate 20,000 — 30,000 USD. Photo: Sotheby's

the deep rounded sides rising from a slightly tapered foot, with a narrow groove encircling the exterior below the rim, covered overall with a lustrous black glaze, thinning at the rim with russet streaks drizzling downwards, the glaze stopping neatly above the foot to reveal the reddish-brown stoneware body. Diameter 5 in., 12.8 cm

Sotheby's. Important Chinese Art, New York, 13 sept. 2016, 10:30 AM