One of the strangest shaped coins that I have seen.
The open access paper has more pictures of it.

Ancient Coin Mint Discovered in China from Over
2500 Years Ago, Heritage Daily,
[www.heritagedaily.com]
[www.heritagedaily.com]

The open access paper is:

Zhao, H., Gao, X., Jiang, Y., Lin, Y., Zhu, J., Ding, S.,
Deng, L. and Zhang, J., 2021. Radiocarbon-dating an
early minting site: the emergence of standardised coinage
in China. Antiquity, pp.1-18.
[www.cambridge.org]

Yourd,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)