Watch List notes:

Potosi, Bolivia, cob 8 reales, 1663 E. S-P37a; KM-21; Cal-1527. 18.52 grams. Choice full pillars-and-waves and cross-lions-castles despite thinning from corrosion, both crowns nearly full, parts of all three dates and assayers and mintmarks, lightly gray-toned, scarce date. With original ROBCAR photo-certificate #M003366. From: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
($250-375)