A blue and white porcelain dish. Yongzheng Mark

Its wide, curving well centered with a dragon chasing a flaming pearl in a double ring band that repeats to the edge of the flared rim and around the exterior walls with two dragons painted en suite, the recessed base bearing the six-character mark in regular script within another double ring. 6 7/8in (17.5cm) diameter. Estimate: $2,000 - 3,000

Bonhams. Fine Asian Works of Art, 29 Jun 2009. 220 San Bruno Avenue, San Francisco www.bonhams.com