A pair of dishes of this size with similar Yongzheng marks and covered with what is described as a pale cobalt-blue glaze in the Percival David Foundation is included in the Illustrated Catalogue of Ming and Ch'ing Monochrome, London, 1973, Section 6, nos. B560 and 561. Two similarly marked dishes of the same size, with a lavender blue glaze, were included in the O.C.S. exhibition, Monochrome Porcelain, London, 1948, nos. 39 and 136.