A rare black-glazed 'Cizhou' bowl and cover, Song-Yuan dynasty. Estimate 6,000 — 8,000 GBP (8,139 - 10,852 EUR). Photo: Sotheby's.

the bowl of deep U-shaped form raised on a short straight foot, surmounted by a flattened domed cover, covered overall with an oily-black glaze thinning to a mushroom-brown tone at the rim. Quantité: 2 - 12cm., 4 3/4 in.

Provenance: Mathias Komor, New York. 
The Wadsworth Atheneum Museum of Art (1978-2009), no. 1978.34a and b.

Note: Compare a painted Cizhou bowl and cover of the same form from the collection of the Kunstgewerbemuseum der Stadt in Zurich, illustrated in Thomas Dexel, Die Formen Chinesischer Keramik, Tubingen, 1955, pl. 64a; and another decorated with a layer of white slip, but attributed to the 9th-10th century, from the collection of Sir Alan and Lady Barlow, published in Michael Sullivan, Chinese Ceramics, Bronzes and Jades in the Collection of Sir Alan and Lady Barlow, London, 1963, pl. 47b.

Sotheby's. Important Chinese Art, Londres, 13 mai 2015, 11:00 AM