A very similar Xianfeng-marked censer is illustrated in The Complete Collection of Treasures of the Palace Museum - 37 - Monochrome Porcelain, Hong Kong, 1999, p. 274, no. 251. Another is illustrated in Selected Ceramics from the Collection of Mr. and Mrs. J. M. Hu, Shanghai Museum, 1989, p. 134, no. 96, and again in Shimmering Colours: Monochromes of the Yuan to Qing Periods, The Zhuyetang Collection, Art Museum, The Chinese University of Hong Kong, 2005, p. 230, no. 153.