China
Zhou Dynasty, State of Qin, Warring States Period Round-Holed Coin ND (475-221 BC), Legend reads: Zhong Yi Liang Shi Er Yi Zhu (weight 1 Liang 12), Hartill-6.26 (R3), FD-390, DCD-609, XF for the issue. Nice greenish patina with some surface porosity. A very rare early issue.
Estimate: 1500-2000 USD