Three closely related bowls were sold in these rooms, one, 2nd May 2000, lot 735, another one, 28th November 1992, lot 168 and a third one, 9th October 2012, lot 3100. This lotus bouquet design was a Yongzheng innovation that was reproduced by successive Qing emperors; see two Yongzheng prototypes in the Palace Museum, Beijing, illustrated in The Complete Collection of Treasures of the Palace Museum. Porcelains in Polychrome and Contrasting Colours, Hong Kong, 1999, pls 224-25; and a pair of bowls from the Edward T. Chow collection, sold in these room, 25th November 1980, lot 128. A Jiaqing example, in the Nanjing Museum, is published in The Official Kiln Porcelain of the Chinese Qing Dynasty, Shanghai, 2003, p. 362; and a Daoguang version, from the Simon Kwan collection, was included in the exhibition Imperial Porcelain of the Late Qing, The Chinese University of Hong Kong, Hong Kong 1983, cat. no. 28.