China
People's Republic silver Proof "Sun Yat-sen" 10 Yuan 1986, KM146. Sold encapsulated and with original case of issue.
https://coins.ha.com/itm/china/china-people-s-republic-silver-proof-sun-yat-sen-10-yuan-1986-/a/61165-97147.s?type=CoinArchives61165
HID02906262019
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Estimate: 100-150 USD