China: Song-Yuan Dynasty (960-1368 CE), coin-shaped charm with square central hole, obverse inscribed 'Wen wang bai zi', reverse plain, 30.5*1.1mm, 4.2g, Zhong Qian Genuine, labelled as Qing Dynasty. Extremely rare to see such a piece dating from the Song-Yuan period..
Estimate: 500 - 2000