Lot 18. A pair of copper-red glazed cups, Yongzheng marks and period. Diameter 3 in., 7.6 cm. Estimate 20,000 — 30,000 USDLot sold 25,000 USD. Photo: Sotheby's.

each finely potted with deep rounded sides supported on a short foot, the exterior covered in a rich raspberry-red glaze falling short of the rim and pooling to a darker tone around the foot, the interior and base glazed white, six-character marks within double circles (2). 

Sotheby's. Monochrome, New York, 15 sept. 2015