France
Napoleon III gold 10 Francs 1866-BB MS67 NGC, Strasbourg mint, KM800.2. A laudable and nearly flawless example displaying a blooming gold foil luster that arises simultaneously from multiple areas of the obverse surface, these alternately emitting light as the coin is rotated in hand. Tied for the absolute finest yet seen by PCGS and NGC for this date.
https://coins.ha.com/itm/france/france-napoleon-iii-gold-10-francs-1866-bb-ms67-ngc-/a/3089-32531.s?type=CoinArchives3089
HID02906262019
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Estimate: 1000-1500 USD