A copper-red-glazed bowl, Yongzheng six-character mark in underglaze blue within a double circle and of the period (1723-1735). Estimate $12,000 – $18,000. Photo Christie's Image Ltd 2015

The bowl has deep, rounded sides and is covered on the exterior with a glaze of soft, crushed-strawberry-red color ending in a line on the ring foot. 5 ½ in. (14 cm.) diam.

Christie's. FINE CHINESE CERAMICS AND WORKS OF ART, 17 - 18 September 2015, New York, Rockefeller Plaza