Two glazed ceramic teabowls, Song-Jin dynasty. Photo Bonhams.

The first a shallow Jianyao tea bowl with a wide well, covered in a glaze of 'hare's fur' type with russet striations resolving into mirror black along the floor of the well andending in uneven welts along the exterior walls, exposing the purple-brown clay on the lower walls and the short foot with shallow recessed base; the second a teabowl of Yaozhou type, molded with a flared rim and impressed design of boys surrounded by flowering branches, the extensively degraded olive-green glaze covering all surfaces except the foot pad surrounding the shallow recessed base. 3 3/4 and 4 7/8in (9.5 and 12.5cm) diameter. Estimate US$ 1,500 - 2,500 (€1,100 - 1,800). Unsold

Provenance: Oskar Gerson Collection, acquired during the 1920's-1930's, Germany, and thence by descent

Bonhams. ASIAN DECORATIVE ARTS. San Francisco. 18 Dec 2013 -www.bonhams.com