Watch List notes:

Potosi, Bolivia, cob 4 reales, 1751q/E, rare. S-P52; KM-39. 9.43 grams. Bold cross despite corrosion, clear date and bold over-assayer, toned. With photo-certificate #970040. Recovered from: Luz, sunk in 1752 off Montevideo, Uruguay
($175-250)