This design is based on Yongle fifteenth century prototypes, examples of which are illustrated by J.A. Pope, Chinese Porcelain from the Ardebil Shrine, Smithsonian Institution, Freer Gallery of Art, Washington, D.C., 1956, pl. 40, no. 29.61, and in the Hong Kong O.C.S. exhibition catalogue, Jingdezhen Wares, The Yuan Evolution, 1984, no. 142, from the collection of Dr. Ip Yee. However, while the Yongle examples generally bear two melons, and the plant is shown rooted to the ground, the Yongzheng examples have a design of a scrolling vine usually bearing seven melons. Compare the Yongzheng-marked dish of this size illustrated in Chinese Porcelain, The S.C. Ko Tianminlou Collection, Part 1, Hong Kong, 1987, col. pl. 53.