Qingbai ewers copying metal prototypes are rare. A related ewer, also with a lobed body, raised on a plain foot and minus the bosses, excavated from a Song tomb at Yanshan near Shaowu in Fujian province, is illustrated in Kaogu, 1981:5, pl. 11, fig. 8. One in the Yokogawa collection, is included in Illustrated Catalogues of Tokyo National Museum, vol. 1, no. 378; and another is illustrated in Chinese Ceramics in the Idemitsu Collection, Tokyo, 1987, pl. 417. Compare, also, the qingbai vase with lobed body and fluted foot in the British Museum, illustrated by B. Gray, Sung Porcelain and Stoneware, London, 1984, pl. N.
A very similar ewer was sold at Sotheby's, London, 19 June 2002, lot 22.