A Kangxi-marked bowl of this unusual pattern, although of slightly larger size (23 cm.), is illustrated in The Tsui Museum of Art; Chinese Ceramics IV; Qing Dynasty, Hong Kong, 1995, no. 51. For the fifteenth century prototype, see d'Argencé, Chinese Ceramics in the Avery Brundage Collection, San Francisco, 1967, pl. L1(C).