A rare Yixing teapot and cover mid 18th century

A rare Yixing teapot and cover mid 18th century, the curved square-section body applied with a band of stiff leaves to the foot, the neckrim impressed with a key fret band, the cover surmounted by a lion dog biting into a spinning brocade ball, oval seal mark to the cover, some restoration to the cover, 20cm. (2) Provenance: from the collection of Arthur J Harris.