Three miniature enamelled Yixing teapots and covers 19th century

Three miniature enamelled Yixing teapots and covers 19th century, one pear-shaped and painted in polychrome with birds, butterflies and flowers, two decorated in white and black with floral designs, one with a Mengchen mark, the others incised with calligraphic marks, 11cm max. (6) Provenance: the Arthur J Harris collection. Illustrated: Patrice Valfré, Yixing: Teapots for Europe, nos.179 and 180 (for left and right teapots).