France
Napoleon III gold 50 Francs 1857-A MS63 NGC, Paris mint, KM785.1. AGW 0.4667 oz.
https://coins.ha.com/itm/france/france-napoleon-iii-gold-50-francs-1857-a-ms63-ngc-/a/3083-32382.s?type=CoinArchives3083
HID02906262019
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Estimate: 750-800 USD