DAOGUANG SIX-CHARACTER INCISED SEAL MARK WITHIN A DOUBLE SQUARE AND OF THE PERIOD (1821-1850)

One of a pair of similarly glazed jars with the same unusual incised Daoguang seal mark, but with covers, is illustrated by J. Ayers, The Baur Collection, Chinese Ceramics, vol. 3, Geneva, 1972, nos. A 457 and 458, and the mark on one of these jars is illustrated in Sekai Toji Zenshu, vol. 15, Tokyo, 1983, p. 208, no. 295.

The shape and color of these Daoguang jars is most likely based on earlier Ming dynasty prototypes, such as the Jiajing example in the Percival Foundation, London, illustrated in Sekai Toji Zenshu, ibid., p. 196, pl. 257.