A fine enamelled Yixing teapot and cover late 18th century

A fine enamelled Yixing teapot and cover late 18th century, the square section body tapering towards the neck, one side decorated with a roundel of fish, the reverse with calligraphy, all above crashing waves, circular impressed mark to the base, 19.5cm. (2) Cf. The Mai Foundation, No. 34 for a similar example. Provenance: from the collection of Peter and Susan Wain.