Poland
People's Republic gold Proof 2000 Zlotych 1979-MW PR67 Ultra Cameo NGC, KM-Y107. Issued to celebrate the Nobel Prize winning chemist Marie Curie. AGW 0.230 oz.
https://coins.ha.com/itm/poland/poland-people-s-republic-gold-proof-2000-zlotych-1979-mw-pr67-ultra-cameo-ngc-/a/3082-34654.s?type=CoinArchives3082
HID02906262019
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Estimate: 350-400 USD