Two hexagonal Yixing teapots and covers late 17th century

Two hexagonal Yixing teapots and covers late 17th century, both decorated with panels of dragons chasing flaming pearls on a diaper ground, metal replacements, 20.5cm max. (4) Provenance: the Arthur J Harris collection. Illustrated: Patrice Valfré, Yixing: Teapots for Europe, no.203 (left teapot).