Portugal
João VI copper Proof Pattern 10 Reis 1820 PR64+ Red and Brown PCGS, Lisbon mint, Gomes-E1.01, KM-Pn51. Razor sharp strike with remarkable detail and pristine surfaces. If not for the few carbon flecks on both sides this has potential for the coveted Gem grade. Impressive example with clean eye-appeal.
Estimate: 1500-2000 USD