Lot 52. A carved Qingbai 'Chilong' bowl, Song dynasty. Diameter 8 1/2  in., 21.6 cm. Estimate 10,000 — 15,000 USD. Lot sold 17,500 USD. Photo Sotheby's

the rounded sides rising from a tapering foot to a gently everted hexalobed rim, the interior freely carved with a lively pair of chilong centering on a stylized floret, applied overall with a translucent pale blue glaze, the footrim and recessed base unglazed. 

Sotheby's. Monochrome, New York, 15 sept. 2015, 10:00 AM