Table 5 Pb isotope data for Yongle Tongbao coin samples from Japan

From: An archaeometallurgical study of Ming Dynasty (1368–1644 AD) coins from the North Reef, South China Sea

sample number

Sample name

206Pb/204Pb

207Pb/204Pb

208Pb/204Pb

C-21

Yongle Tongbao

18.288

15.644

38.664

  1. Table 5 Data are cited from the article ‘Lead Isotope Ratios of Ancient East Asian Copper Coins’ by Hisao Mabuchi38.