Potosi, Bolivia, cob 2 reales, 1661 E. S-P37a; KM-16; Cal-929. 3.54 grams. A bit thin on the edges from corrosion yet nicely detailed with bold pillars date and full cross, small edge crack as made. With original ROBCAR photo-certificate #M003351. From: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
($150-225)