Compare the white jade plaque of the same form and design, inscribed with a Qianlong reign mark and inventory number, in the Qing Court collection, illustrated in The Complete Collection of Treasures of the Palace Museum: Jadeware, vol. III, Hong Kong, 1995, pl. 127. Compare, also, the jade plaque with imperial mark and series number from the Oscar Raphael Collection, now in the Fitzwilliam Museum, Cambridge, England, and illustrated by James C.S. Lin, "The Collection of Qing Dynasty Jades in the Fitzwilliam Collection," Arts of Asia Magazine, May-June 2010, pp. 111-24, no. 14. Another similar plaque was included in the S. Marchant & Son exhibition, Post-Archaic Chinese Jades, June 1995, no. 51.