Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651O, with THREE countermarks (very rare): one crown-alone countermark on shield and two crowned-O countermarks on cross. S-P35; KM-19b; CT-510. 24.20 grams. Bold full countermark on full but partially flat shield below full crown, partial second countermark on full cross and full third countermark in legend before the full date, light toning, minimal corrosion. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $700-1000