A rare yellow jade 'chilong' brush washer and cover, Ming Dynasty. Photo: Bonhams.

The shallow vessel carved in relief around the flaring sides with three lithe clambering chilong, finely incised with the hairs on their legs and eyebrows, a fourth chilong curled on top of the cover, the head slightly raised with benign expression, the translucent stone of yellow tone, with subtle russet inclusions. 12.5cm (5in) wide (2). Estimate £15,000 - 20,000 (€18,000 - 24,000)

Bonhams. FINE CHINESE ART, London, New Bond Street, 15 May 2014 -http://www.bonhams.com/