Watch List notes:

Potosi, Bolivia, cob 4 reales, 1750 E. S-P51; KM-39; Cal-403. 10.94 grams. Interesting irregular shape, somewhat corroded and darkly toned surfaces with bold full pillars and clear date, weak cross. With photo-certificate. From: Luz, sunk in 1752 off Montevideo, Uruguay
($150-225)