Lot Essay
Comparable Qianlong marked vases of this type include one illustrated by J. Ayers, The Baur Collection Geneva - Chinese Ceramics, vol. III, no. A291; one illustrated in Ming and Qing Ceramics and Works of Art from the Osaka Museum, p. 46, fig. 209; and another by Liu Liang-Yu, Ch'ing Official and Popular Wares, vol. 5, p. 207.