Another large white jade box formed as a duck amidst lotus plants was sold at Sotheby's Hong Kong, 19 May 1987, lot 358, from the T. Y. Chao Collection, and a group of eight ducks, also in a tangle of water weeds, was included in the O. C. S. exhibition, Chinese Jade Throughout the Ages, London, 1975, illustrated in the Catalogue, no. 409.