A Cizhou type black glazed stoneware tea bowl with russet spots. Jin Dynasty

Its deep curving well marked with five splashes of russet-colored iron oxide against the mottled black and brown glaze layers that extend onto the exterior walls finished with a recessed band immediately below the lip.. 5 3/in (14.5cm) diameter. Estimate: $2,000 - 3,000

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