Previously sold Sotheby's Hong Kong, 14 November 1989, lot 177.
It is very rare to find bowls of this pattern and glaze with Yongzheng marks; many such examples with Qianlong marks have been published. Compare with two aubergine-glazed bowls from the Hall family collection bearing Yongzheng marks incised with dragons and phoenix, the first slightly larger illustrated in Sekai Toji Zenshu, vol. 15, Tokyo, 1983, col. pl. 285; the other much smaller sold Sotheby's Hong Kong, 2 May 2000, lot 530.