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

A nearly identical celadon-glazed five-necked cong-form vase of similar size (27.2 cm.) dated to the Yongzheng period in the collection of the National Palace Museum is illustrated in Catalog of the Special Exhibition of K'ang-Hsi, Yung-cheng and Ch'ien-lung Porcelain Ware from the Ch'ing Dynasty in The National Palace Museum, Taipei, 1986, no. 64.