Potosi, Bolivia, cob 1 real, 1664E.S-P37a; KM-13; Cal-766.3.71 grams.Full pillars (one 100% complete) with bold date and mintmark and assayer, good but off-center cross, lightly toned and corroded but still overweight as made.With ROBCAR photo-certificate #M20183.Recovered from: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
Estimate: 70-100 USD