Watch List notes:

Potosi, Bolivia, cob 1 real, (16)46, assayer not visible, very rare. KM-12a. 2.65 grams. Crudely flat and corroded but with full and clear 46 of date, toned in crevices. Recovered from: Consolacion, sunk in 1681 off Isla Santa Clara, Ecuador

Estimate: $100