For related Qianlong overlay glass bottles, each bearing a similar wheel-cut reign mark, see Chang Lin-sheng, Snuff Bottles in the Collection of the National Palace Museum, Taipei, 1991, pp. 216-19, nos. 280-91. See, also, three Qianlong overlay glass bottles, all with wheel-cut reign marks, illustrated in Masterpieces of Snuff Bottles in the Palace Museum, Beijing, 1995, pp. 90-91, nos. 74-76.