Brazil
Jose I gold 6400 Reis 1775-R AU58 NGC, Rio de Janeiro mint, KM172.2, LMB-443. On the absolutely precipice of Mint State preservation, only the slightest darkening atop Jose's portrait indicating any wear.
From the Santa Cruz Collection
https://coins.ha.com/itm/brazil/brazil-jose-i-gold-6400-reis-1775-r-au58-ngc-/a/3076-33385.s?type=CoinArchives3076
HID02906262019
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Estimate: 600-800 USD