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

A virtually identical bowl, also with a Yongzheng mark and of the period, was sold at Sotheby's, Hong Kong, 14 November 1989, lot 222, where it is noted that a slightly smaller bowl of this pattern is in the collection of the National Palace Museum, Taipei.