Brazil
Maria I & Pedro III gold 6400 Reis 1785-R AU58 NGC, Rio de Janeiro mint, KM199.2. AGW 0.4229 oz.
From the Dresden Collection
https://coins.ha.com/itm/brazil/brazil-maria-i-and-pedro-iii-gold-6400-reis-1785-r-au58-ngc-/a/3076-33395.s?type=CoinArchives3076
HID02906262019
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Estimate: 600-700 USD