Each well cast in the form of a taotie mask with bulging eyes, the masks' elongated beak curled at the end forming a hollow ring, suspending a thick circular ring handle, box.
Provenance: The Mengdiexuan Collection.
Note: Compare a related pair of bronze mask and ring handles, Han dynasty, which was sold at Sotheby's New York, 15 September 2011, lot 1128.
Bonhams. Asian Art, 6LONDON, KNIGHTSBRIDGE