France
Republic gold Proof Piefort 5 Francs 1961 PR69 NGC, Paris mint, KM-P432. From a mintage of just 250 pieces, for all intents and purposes a perfect coin with shimmering satin luster across the entirety of the planchet.
https://coins.ha.com/itm/france/france-republic-gold-proof-piefort-5-francs-1961-pr69-ngc-/a/3083-30292.s?type=CoinArchives3083
HID02906262019
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Estimate: 1800-2000 USD