Paired mandarin ducks were a popular symbol of conjugal fidelity and marital happiness.
A very similar vessel is illustrated by R.L. d'Argencé in Chinese Ceramics in the Avery Brundage Collection, San Francisco, 1967, pl. L(D). Another is illustrated by C.J.A. Jörg, Chinese Ceramics in the Collection of the Rijksmuseum, Amsterdam: The Ming and Qing Dynasties, 1997, p. 35, no. 9.