A rare Cizhou black glazed ribbed jar, Song Dynasty (960-1279) the ribbed, globular body is supported on an unglazed foot, and the neck is flanked by a pair of strap handles. The jar is covered with a blackish-brown glaze, and the raised ridges on the ribbed body are accentuated by vertical lines that were applied with creamy white slip. 11.5 cm high. Provenance: an important private collection, Sydney, Australia