YONGZHENG INCISED FOUR-CHARACTER MARK WITHIN DOUBLE-SQUARES AND OF THE PERIOD (1723-1735)

The Qing Court Records list 30 different colours of monochrome glass made by the Imperial Workshops during the Yongzheng period, including the clair-de-lune on the present lot, see Zhang Rong, Luster of Autumn Water: Glass of Qing Imperial Workshop, Beijing, 2005, p. 15. The author also states that Yongzheng-marked glass, predominantly monochrome, are very rare with only 21 pieces in the collection of the Beijing Palace Museum, and under 100 pieces in other collections.

Compare to a Yongzheng-marked yellow glass jar of the similar shape but smaller size (3.8 cm high) in the Beijing Palace Museum, op. cit., pl. 8.