Previously sold at Christie's Hong Kong, 26 April 1999, lot 596.
Compare a similar Yongzheng brushwasher in the Shanghai Museum, illustrated in Ancient Chinese Ceramic Gallery, Shanghai, 1996, pl. 87; another shallower example from the Carl Kemp Collection in the Museum of Far Eastern Antiquities, illustrated in Oriental Ceramics, Kodansha, Vol. 9, black and white illustration no. 275. A larger example is illustrated in Qing Porcelain of Kangxi, Yongzheng, Qianlong from the Palace Museum Collection, 1989, p. 447, pl. 129.