Potosi, Bolivia, cob 8 reales, 1666 E. S-P37a; KM-21; Cal-1532. 22.77 grams. Full cross and pillars-and-waves, parts of all three dates and mintmarks and assayers but particularly noteworthy for a clear "1666666" (six 6's!) in legend due to doubling, light to moderate corrosion, edge-crack, toned. With ROBCAR tag and photo-certificate #2021209. From: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
($200-300)