A well-carved rhinoceros horn cup, 17th-18th century. Photo: Christie's Images Ltd 2012  

Raised on a tall foot encircled by a key-fret band and carved in low relief around the exterior with confronted archaistic chilong between C-scrolls and pendent lappets, with four chilongclambering up towards the rim, which is incised with a further key-fret border, and peering over into the interior, the base incised with a seal mark, Xuanhe nian zhi; 5 7/8 in. (14.9 cm.) diam, wood stand - Estimate $80,000 - $120,000

明末/清中期 犀角雕螭龍紋盃

Provenance; Brought to the United States in the early 1930s, and thence by descent within the family to the present owner.

Christie's. Fine Chinese Ceramics and Works of Art (Part I) , 22 - 23 March 2012 , New York, Rockefeller Plaza