QIANLONG SEAL MARK IN UNDERGLAZE BLUE AND OF THE PERIOD (1736-1795)

A similar bowl with Qianlong mark, in the Percival David Foundation, is illustrated in Oriental Ceramics, The World's Great Collections, vol. 6, Tokyo, 1982, pl. 94; and three bowls, also with Qianlong marks, in the Ohlmer Collection, Roemer Museum, Hildesheim, are illustrated by U. Wiesner, Chinesisches Porzellan, Mainz am Rhein, 1981, no. 130-2.