A Chinese stone pendant, probably early 20th century, 5

A Chinese stone pendant, probably early 20th century, 5.3cm high Described in the clients old inventory as 'Medicine stone known as Hsiung Ching' (sulphate of Mercury). Provenance: Mr. Ko acquired this in Peking in 1928 and then by direct family descent. 'Mr Ko' worked for the Chinese Postal Service from 1904-1947. 20世纪早期（可能） 石雕挂件 拍品来源：中国邮政公司高级官员柯先生（生于意大利）于 1904-1947年之间在中国购得