Watch List notes:

Potosi, Bolivia, cob 8 reales, 1651O, with crowned-PH countermark on cross. S-P35; KM-19b; CT-510. 20.68 grams. Very clear full countermark on bold full shield with two clear assayers, the cross and edge corroded (date weak), toned all over. With Marex tag #91-8R-1162. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $250-375