YONGZHENG SIX-CHARACTER MARK IN UNDERGLAZE BLUE WITHIN A DOUBLE CIRCLE AND OF THE PERIOD (1723-1735)

This design is found on a similar Yongzheng-marked stem bowl in the Palace Museum Collection, Beijing, illustrated in The Complete Treasures of the Palace Musuem - 36 - Blue and White Porcelain with Underglazed Red (III), Hong Kong, p. 223, no. 204. Another is illustrated in Gu Tao Ci Zi Liao Cui, Beijing, 2005, 150, no. 128.