A rare pair of Yaozhou 'persimmon'-glazed jars, Northern Song dynasty, 11th-12th century. Estimate $15,000 – $25,000. Unsold. Photo Christie's Image Ltd 2015

Each high-shouldered, tapering jar has a short neck with lipped rim, and is covered overall with a persimmon-brown glaze. 4 ¾ in. (12 cm.) high, box

Provenance: Sotheby's London, 7 December 1993, lot 166.

Christie's. FINE CHINESE CERAMICS AND WORKS OF ART, 15 - 16 March 2015, New York, Rockefeller Plaza