清十八世紀 灰白玉雲紋螭龍耳盃 《永珍》款

deftly carved with irregular sides rising from a flat base to an undulating mouthrim, the exterior finely incised with comma scrolls, one side carved in openwork with a clambering chilong forming the handle, the base with an incised inscription reading yong zhen ('Eternal Treasure'), the translucent stone of a light grey colour mottled with black specks and russet inclusions, wood stand