Asia Art Fair 2015:
Mark Powley

A large spinach jade fang ding, with taotie mask decoration to front and back, and lion head decoration to the legs and ring handles
China
19th century
Height: 27.8 cm

The Fang ding has an ancient pedigree, the shape descends from bronzes of the Erligang period (1500 to 1300 BC); and  earlier in ceramic during the Erlitou period (1900 to 1500 BC).