Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651E/O, with crowned-dot-F-dot countermark on shield. S-P36; KM-19b; CT-512. 26.52 grams. Uncorroded specimen with bold countermark on choice full shield, E/O to right (scarce over-assayer), full but partially flat cross, bold 1's in date, toned in crevices. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $400-600