The soft, gentle hue of clair-de-lune is one of the most treasured Qing glazes, and was reserved exclusively for Imperial porcelains. Clair-de-lune-glazed wares were made in the same eight classic shapes for the writing table, ba da ma, or 'Eight Great Numbers', as peachbloom-glazed wares, but are considerably more rare. For a discussion of these wares, see J. Ayers, "The 'Peachbloom' Wares of the Kangxi period (1662-1722)", T.O.C.S., 1999-2000, vol. 64, pp. 31-50, where a clair-de-lune water pot in the Baur Collection, is illustrated p. 48, fig. 36(R).
Two Kangxi-marked claire-de-lune water pots were sold Sotheby's, New York, 15 September 1999, lot 84, and Sotheby's, Hong Kong, 1 November 1999, lot 339, where it is noted that four claire-de-lune water pots from the Widener collection are now in the National Gallery of Art, Washington, D.C., published in the Gallery's Systematic Catalogue, Decorative Arts, part II, 1998, pp. 93-7. Other examples may be found in the Shanghai Museum, published in Kangxi Porcelain Ware from the Shanghai Museum Collection, Hong Kong, 1998, pl. 216; in the Metropolitan Museum of Art, illustrated by S. Valenstein, A Handbook of Chinese Ceramics, New York, 1989, rev. ed., pl. 240; and one illustrated by J. Ayers in The Baur Collection, Geneva, Chinese Ceramics, vol. III, London, 1972, no. A319.