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

Compare to a doucai waterpot of this design also bearing a Qianlong seal mark, illustrated by John Ayers, The Baur Collection, vol. 4, Geneva, 1974, pl. A571; and another, from the Goldschmidt Collection, sold at Sotheby’s Hong Kong, 13 November 1990, lot 37, and again at Christie’s Hong Kong, 28 November 2006, lot 1545 (fig.1).