YUAN: brass mirror (286.63g), 112mm, cast in pale bronze, yi tong wei jing ke zheng yi guan ("using brass as a mirror, one can adjust ones dress", a well-known excerpt from the Old Book of Tang as a metaphor for the importance of good counsel), discovered in Central Asia, light soil encrustation, VF. A similar example sold appeared at the 2013 Spring sale of Zhongdu International Auction Co.
