Potosi, Bolivia, cob 8 reales, 1654 E, dot-PH-dot at top. S-P37a; KM-21; Cal-1506. 26.24 grams. Choice bold pillars and cross-lions-castles, three assayers and mintmarks, minimal surface corrosion, darkly toned fields, traces of copper color. From: Capitana, sunk in 1654 off Chanduy, Ecuador
($300-450)