Potosi, Bolivia, cob 4 reales, 16(51-2)E, with crowned-L countermark on cross. S-P36; KM-17b. 12.81 grams. Full PHILIPPVS IIII outside of good but off-center shield, full cross with bold full countermark, no corrosion, nicely toned. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate #0333. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($300-450)