Vases of this type, referred to as denglong zun, are more often found with Jiaqing and Daoguang seal marks, however cf. several Qianlong examples illustrated in Oriental Ceramics, The World's Great Collections, Kodansha Series, vol. 7, in the Musee Guimet, fig. 184 from the Grandidier collection; another is illustrated in Keitokuchin Jiki, pl. 88, bottom left, in the Jingdezhen Ceramic Museum