Mongolia
People's Republic silver Proof Piefort "Year of the Child" 25 Tugrik 1980 PR67 Ultra Cameo NGC, London mint, KM-P1. Mintage: 92.
https://coins.ha.com/itm/mongolia/mongolia-people-s-republic-silver-proof-piefort-year-of-the-child-25-tugrik-1980-pr67-ultra-cameo-ngc-/a/3082-34523.s?type=CoinArchives3082
HID02906262019
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Estimate: 400-500 USD