Watch List notes:

Potosi, Bolivia, cob 8 reales, 1666 E. S-P37a; KM-21; Cal-1532. 26.30 grams. Broad flan with only light surface corrosion but much peripheral flatness and weakly struck, still with nearly full pillars-and-waves and cross-lions-castles, spotty toning in crevices (otherwise silvery). With generic certificate. From: Association, sunk in 1707 off the Isles of Scilly, southwest of England
($200-300)