The dish with low vertical sides is raised on a small foot, and covered overall in an even, yellowish-green glaze.

Provenance: Emily Maria Borie Ryerson (1863-1939) Collection, Chicago, before 1923.
The Art Institute of Chicago, accessioned in 1923.  

Note: The olive-toned celadon glaze of this unusual Yongzheng dish, and its distinct shape, with small foot rim and short vertical sides, suggests it may have been inspired by Yaozhou celadon wares of the Song and Jin dynasties. See, for example, the Northern Song-Jin, 12th-13th century Yaozhou celadon dish of similar shape, but carved on the interior, illustrated by Regina Krahl in Chinese Ceramics from the Meiyintang Collection, London, 1994, vol. 1, pp. 232-33, no. 414.  

Christie's. Chinese Art from The Art Institute of Chicago, New York, 12 September 2019