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

Four vases of this pattern are illustrated by J. Ayers and R. Krahl, Chinese Ceramics in the Topkapi Saray Museum, Istanbul, vol. III, London, 1986, p. 1105, no. 2564; where they have been fitted with metal mounts to suit Ottoman use. Other examples include one illustrated in Qingdai Ciqi Shangjian, Hong Kong, 1994, pl. 165; one from the Shanghai Museum, illustrated in Zhongguo Taoci Quanji, part 2, vol. 15, Shanghai, 2000, pl. 2; and one from the Toguri collection, sold at Sotheby's London, 9 June 2004, lot 5.