Potosi, Bolivia, cob 8 reales, 1651E, Latin 5, with unidentified countermark on cross. S-P36; KM-19b; CT-511. 27.26 grams. No corrosion, full date, full but doubled shield, full crown and cross (somewhat flat), the countermark incomplete, nicely toned. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0055. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($350-500)