A pewter-encased Yixing San Ke Zhu teapot and cover 19th century

A pewter-encased Yixing San Ke Zhu teapot and cover 19th century, the sides incised with chrysanthemum and calligraphy, jade handle, finial and spout, Wei seal mark to the interior, signed 'Zhu ??', 14.5cm. (2) Provenance: the Arthur J Harris collection.