Four Yixing teapots and covers 20th century

Four Yixing teapots and covers 20th century, one lotus moulded with loose seeds to the cover, one modelled as a bamboo steamer, one duanni type and incised with a swallow perched on bamboo, the last cylindrical and moulded with a roundel of Chairman Mao, 19.5cm max. (8) Provenance: the Arthur J Harris collection.