A bronze 'Immortals' mirror, Han dynasty - photo Sotheby's

the central hemispherical boss encircled by a row of nipples, the main field cast in high relief with Xi Wangmu (Queen Mother of the West), seated opposite her consort, Dong Wanggong (King of the East), each resting on a cushion flanked by attendants, divided by two chariots pulled by three horses galloping and four bosses in dotted rings, the raised rim with a stylized bird and animal border, the silvery-gray patina with green and brown encrustation, Japanese wood box (6); Diameter 8 1/8  in., 20.6 cm - Estimation: 4,000 - 6,000 USD

PROVENANCE: Kitayama Fine Arts, Tokyo, acquired in the 1970s.

EXHIBITED: Tokubetsu tenji chugoku no bijutsu hitori no me, Kuboso Memorial Museum of Arts, Izumi, 1984, cat. no. 106.

Sotheby's. Fine Chinese Ceramics & Works of Art. New York | 19 mars 2013 - www.sothebys.com