A pale green jade huang of this shape, dated Neolithic period, c. 2500 BC, is illustrated by Jessica Rawson in Chinese Jade from the Neolithic to the Qing, British Museum, 1995, p. 145, no. 5:13. Two further jade huang of this shape and of similar date from the collection of Robert Hatfield Ellsworth were sold at Christie’s New York 19 March 2015, lot 527.