An 18th-century celadon jade teapot of this shape carved with more stylised butterflies and classic scrolls, is in the Palace Museum, Beijing, illustrated in Zhongguo Yuqi Quanji, Vol. 6, Beijing, 1991, pl. 1; and another with a Daoguang yuyong mark (For the Imperial Use of the Emperor Daoguang), is illustrated ibid., pls. 8 and 9. Jade ewers of different forms are also illustrated ibid., pls. 2-7.