A similar example (described as Dongyao) is illustrated by G. Gompertz, Chinese Celadon Wares, London, 1958, pl. 34 and another is illustrated in Selected Masterpieces from the Idemitsu Collection, Tokyo, 1996, pl. 102.
This ewer and cover with its decoration finely cut in high relief may be the rare type of Yaozhou ware previously referred to as Dongyao or 'Eastern' ware. In a discussion of Yaozhou wares in Chinese Ceramics from the Meiyintang Collection, London, 1996, vol. 1, p. 226, Regina Krahl notes that 'vessels of this type have now been discovered at the Yaozhou kiln sites at Huangbaozhen, Tongchuan county.'
The result of Oxford Authentication Ltd. thermoluminescence test no. P298j51 is consistent with the dating of this lot.