Brazil
João Prince Regent Counterstamped 160 Reis ND (1809) VF Details (Environmental Damage) NGC, Rio de Janeiro mint, KM296, LMB-290. Displaying shield counterstamp (AU Standard) on a Maria I 150 Reis 1771-R (cf. KM195). A deeply embossed "escutcheon" counterstamp struck on a host already imbued with the noted porous surfaces.
https://coins.ha.com/itm/brazil/brazil-joao-prince-regent-counterstamped-160-reis-nd-1809-vf-details-environmental-damage-ngc-/a/3091-30074.s?type=CoinArchives3091
HID02906262019
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Estimate: 100-150 USD