Potosi, Bolivia, cob 8 reales, 1650O, early-style date, with crowned-L countermark on cross. S-P35; KM-19b; CT-509. 26.18 grams. Choice details (slightly doubled) on a large flan with edge-crack, nicely toned, no corrosion. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0251. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($400-600)