China
People's Republic silver Proof "Zhan Tianyou" 100 Yuan (12 oz) 1987, KM177. Mintage: 2,911. Struck to celebrate the 125th Anniversary of Zhan Tianyou's birth. Sold with case of issue and mint certificate.
https://coins.ha.com/itm/china/china-people-s-republic-silver-proof-zhan-tianyou-100-yuan-12-oz-1987-/a/61165-97154.s?type=CoinArchives61165
HID02906262019
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Estimate: 400-600 USD