Closely related Kangxi cups have sold in our Hong Kong rooms, 28th November 1978, lot 129, and 20th May 1980, lot 90. A pair with Yongzheng marks were also sold in our Hong Kong rooms, 17th November 1975, lot 134, and included in the Exhibition of Ming and Ch'ing Porcelain from the Collection of the T.Y. Chao Family Foundation, Hong Kong Museum of Art, Hong Kong, 1978, cat. no. 55, and later sold in the same rooms, 19th May 1987, lot 280.