France
Republic platinum Proof Piefort "Marie Curie" 100 Francs 1984 PR69 Ultra Cameo NGC, Paris mint, KM-P925. Mintage: 9. Produced in honor of the pioneering scientist Marie Curie. Sold with original "Monnaie de Paris" mint certificate numbered "004".
https://coins.ha.com/itm/france/france-republic-platinum-proof-piefort-marie-curie-100-francs-1984-pr69-ultra-cameo-ngc-/a/3085-31478.s?type=CoinArchives3085
HID02906262019
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Estimate: 3000-4000 USD