Lot 339. A small copper-red glazed cup, Yongzheng Mark And Period; 7.4cm., 2 7/8 in. Estimation 10,000 - 15,000 GBP. Lot sold 40,000 GBP. Photo Sotheby's.

the rounded sides supported on a short tapered foot, the exterior covered with a rich red glaze stopping neatly just above the footring, the interior glazed white, inscribed to the base with a six-character reign mark within a double-circle

Sotheby's. Fine Chinese Ceramics & Works of Art. London, 06 nov. 2013