Watch List notes:

Potosi, Bolivia, cob 4 reales, 1680V.S-P39; KM-25; Cal-525.4.98 grams.Darkly colored and thin from saltwater corrosion but some detail on both sides, clear date and assayer.With photo-certificate.From: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
($100-150)