Compare the present piece with a brushrest of similar design inscribed with the seal Song Shan in the Palace Museum Collection, Beijing, illustrated in The Complete Collection of Treasures of the Palace Museum, vol. 44, Bamboo, Wood and Ivory Carvings, Hong Kong, 2002, p. 42, no. 40; and another from the Dr. Ip Yee Collection, illustrated by Dr. Ip Yee and Laurence C. S. Tam, Chinese Bamboo Carving, Part 1, Hong Kong, 1978, pp. 338-339, no. 102. The authors note that this is a common design executed with varying standards of carving as they appear to have been made during different periods and by different carvers. The current example certainly ranks among the better examples of carving of this design.
Another brushrest of similar design was sold at Sotheby's Hong Kong, 17 May 1989, lot 365.