Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651O, Latin 5, with crowned-•F• (two dots) countermark on shield. S-P35; KM-19b; CT-510. 25.71 grams. Full date and bold full countermark, full but partially flat shield and crown and cross, full king's name, nicely toned and corrosion-free. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0061. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($400-600)