Robin's-egg blue glazes are thought to have developed during the Yongzheng period as a free interpretation of Song dynasty Jun glazes. Similar examples with Qianlong marks have been sold in these rooms, 21 March 2000, lot 381; in our London rooms, 11 July 2006, lot 140; and in our Hong Kong rooms, 28 April 2003, lot 691.
A number of similar vases with Qianlong marks have been published. One in the Grandidier Collection, the Musée Guimet, Paris, is illustrated in Oriental Ceramics, The World's Great Collections, vol. 7, Tokyo, 1981, no. 184; another from the Jingdezhen Pottery and Porcelain Museum, Jiangxi province, is illustrated in China's Jingdezhen Porcelain through the Ages: Qing Dynasty, 1998, no. 235; and one is illustrated by Liu Liang-yu, Ch'ing Official and Popular Wares, vol. 5, Taipei, 1991, p. 167.