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An underglaze iron-decorated globular jar. Joseon Dynasty, 19th Cenury

Its wide rim finished with a concave edge on the interior and exterior surfaces and its globular body painted in bold outlines of iron oxide with a scaly dragon chasing a flaming pearl, the celadon-tinged glaze covering all surfaces except the foot pad. 13 1/4in (33.5cm) diameter. Estimate: $6,000 - 8,000

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A white glazed porcelain jar. Joseon Dynasty, 19th Century

Thickly potted with a flared rim and ovoid body raised upon a tall foot, the celadon-tinged glaze covering all surfaces except the foot pad with some gaps in the glaze layer. 14 3/4in (37.5cm) high. Estimate: $5,000 - 7,000

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