From: A glimpse into the monetary supply network of the Tang empire in the seventh century CE: archaeometallurgical study of Kaiyuan Tongbao coins from Lafu Queke cemetery, Xinjiang, Northwest China
ICP-MS
SRM981
Number
206Pb/204Pb
207Pb/204Pb
208Pb/204Pb
1
16.947
15.499
36.724
2
16.945
15.498
36.721
3
16.941
15.494
36.719
Recommended values
16.942
15.496
36.720