Lot 229. A russet-splashed black-glazed 'partridge feather' bowl, Northern Song-Jin dynasty (960-1234). Diameter 4 5/8  in., 11.7 cm. Estimate 15,000 — 20,000 USD. Sold Price: 43,750 USD. © Sotheby's 2018.

well potted with gently rounded sides rising from a short straight foot to an everted rim, the interior covered with a lustrous black glaze, accentuated with russet 'partridge feather' streaks, the exterior covered in a persimmon glaze stopping neatly above the foot to reveal the grayish-yellow stoneware body.

Sotheby's. Important Chinese Art, New York, 12 sept. 2018, 10:30 AM