The shape of this vessel, Guanyin zun, refers to the shape of the vase held by many figures of Guanyin, and said to contain ambrosia or magic elixir. It is also known as liuye ping, 'willow-leaf vase', owing to its elegant form, which resembles that of a willow leaf.
Compare the nearly identical Kangxi example in the Metropolitan Museum of Art, New York, illustrated in Oriental Ceramics, The World's Great Collections, vol. 12, Tokyo, 1977, no. 136, where it is illustrated with other clair-de-lune-glazed objects for the scholar's table; and another similar example, in the National Gallery of Art, Washington D.C., illustrated in Decorative Arts, Part II: Far Eastern Ceramics and Paintings, Persian and Indian Rugs and Carpets, Washington D.C., 1998, p. 78. See, also, one sold at Christie's Hong Kong, 28 November 2012, lot 2118. Similar examples in a number of different glazes are in major institutions worldwide including the Palace Museum, Beijing; the Shanghai Museum; and the Baur Collection, Geneva.