Watch List notes:

Potosi, Bolivia, cob 4 reales, 1680V. S-P39; KM-25; CT-507. 11.33 grams. Nice full cross and pillars-and-waves, two dates and assayers and mintmarks, thin from corrosion but less so than most, attractively toned. With ROBCAR photo-certificate #M180119. Recovered from: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
(250 - 375 USD)