The unique shape of the current vase is based on an archaic bronze prototype. Examples of this form decorated with various different glazes are known, including a Ming blue and white vase from the W.W. Winkworth (1897-1991) collection that was sold at Sotheby's London on 12 December 1972, lot 83; a Yongzheng mark and period 'tea dust'-glazed vase illustrated in Kangxi, Yongzheng, Qianlong: Qing Porcelain from the Palace Museum Collection, Beijing, 1989, p. 298. pl. 127; and a Qianlong mark and period Guan-type vase, illustrated in R. Krahl, Chinese Ceramics from the Meiyintang Collection, London, 1994, vol. II, no. 873.