Ccompare with two other published pairs of Yongzheng-marked bowls of this rare Chenghua-style design and size, one from the Edward T. Chow collection, sold in Hong Kong, 19 May 1981, lot 555; the other illustrated in Tsui Museum, Chinese ceramics IV, pl. ????(CHECK TITLE TOO),
Compare also a pair of Yongzheng-marked cups of smaller size but of similar design included in the joint Exhibition from the Collections of the Percival David Foundation and C.P. Lin, Elegant Form and Harmonious Decoration, Catalogue, no. 143.