A ‘Jian’ ‘Hare’s Fur’ teabowl, Song-Jin dynasty; 1.3cm., 4 1/2 in. Estimate 3,000 — 5,000 GBP. Unsold. © Sotheby's 2013.

the deep rounded sides rising from a short straight foot to a lipped rim, covered overall in a black glaze with cascading reddish-brown streaks and falling short of the foot to reveal the purple-brown body.