Watch List notes:

Potosi, Bolivia, cob 8 reales, (1)638, assayer not visible. KM-19a. 27.72 grams. Bold 38 of date, full shield and cross but centrally weak due to uneven thickness, no corrosion, spotty toning. Recovered from: Concepcion, sunk in 1641 off Hispaniola
($200-$300)