ZHENGDE SIX-CHARACTER MARK IN UNDERGLAZE BLUE WITHIN A DOUBLE CIRCLE AND OF THE PERIOD (1506-1521)

See a closely related example in the Palace Museum, Beijing, illustrated in The Complete Collection of Treasures in the Palace Museum, Beijing, 2009, no. 70; a bowl of this design in the Metropolitan Museum of Art, New York, is illustrated in S. Valenstein, A Handbook of Chinese Ceramics, New York, 1989, no. 156; and another from the collection of Sir Percival David, now in the British Museum, London, is published in Daisy Lion-Goldschmidt, Ming Porcelain, London, 1978, no. 106.