Lot 672. A large Jian 'hare's fur' tea bowl, Song-Jin dynasty (960-1234). Diameter 8 1/8  in., 20.6 cm. Estimate 30,000 — 50,000 USD. Photo: Sotheby's.

the conical sides rising from a straight foot to an everted rim, covered overall in a viscous black glaze pooling in thick drops around the biscuit foot, the rim suffused with brown tones trickling down the interior and exterior walls in a 'hare's fur' pattern.