QIANLONG SIX-CHARACTER SEAL MARK IN UNDERGLAZE BLUE AND OF THE PERIOD (1736-1795)

Compare this brush washer with other 18th century scholar's objects also decorated with a Guan-type glaze, such as a brush washer and a brush rest in the collection of the National Palace Museum, Taipei, illustrated in Through the Prism of the Past: Antiquarian Trends in Chinese Art of the 16th to 18th Century, Taipei, 2003, nos. I-07 and I-09.