Watch List notes:

Potosi, Bolivia, cob 8 reales, 165(0-1)O, with pentagonal crowned-1652 countermark on cross (very rare). S-P35; KM-19b. 21.28 grams. Broad flan but worn from corrosion, with full inner details and much legend, two bold assayers, weak but certain countermark with full crown and 65 of that date, bold 165 of coin date as well, toned in crevices. Capitana, sunk in 1654 off Chanduy, Ecuador

Estimate: $700-1000