A blue and white porcelain basin. Yongzheng Mark, Guangxu Period

The shallow cylindrical form painted with bats and clouds around its flat mouth rim and a narrow band of dragons against leaf scrolls around its low walls, the base unglazed except for a slightly recessed center medallion bearing the six-character mark within a double ring; with collapsible wood display stand. 20 7/8 (53cm) diameter. Estimate: $2,000 - 3,000

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