Two Yixing duanni teapots and covers 19th / 20th century

Two Yixing duanni teapots and covers 19th / 20th century, one cylindrical and painted with a mountainous landscape and calligraphy, the other hexagonal and incised with branches and calligraphy, both with impressed marks to the bases, 16cm. (4) Provenance: the Arthur J Harris collection. Cf. K. S. Lo, The Stonewares of Yixing, no.114 for a related example.