Brazil
João V gold 6400 Reis 1742-R AU Details (Test Cut) NGC, Rio de Janeiro mint, KM149. A collectible example with light, even wear on the highpoints and subdued luster remaining in the fields.
From the Dresden Collection
https://coins.ha.com/itm/brazil/brazil-joao-v-gold-6400-reis-1742-r-au-details-test-cut-ngc-/a/3076-31074.s?type=CoinArchives3076
HID02906262019
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Estimate: 800-1000 USD