A rare doucai cup, Yongzheng six character mark within a double circle and of the period. Photo courtesy California Asian Art Auction Gallery USA

Enameled on the exterior with a continuous band of conjoined scrolling tendril patterns, Ruyi patterns, and key-fret patterns, the bottom bears double ring mark and six character "Yongzheng" mark. Top D: 4 3/8 in (11.1 cm) H: 2 5/8 in (6.7 cm). Estimated Price: $4,500 - $6,000

California Asian Art Auction Gallery USA. Magnificent Asian Works of Art. June 23, 2013, 1:00 PM PST