Potosi, Bolivia, cob 4 reales, 1750E. S-P51; KM-39; CT-437. 11.97 grams. Full pillars and cross (the latter off-center), two full denominations, darkly toned, very light surface corrosion. With Sedwick certificate from 2004. Recovered from: Luz, sunk in 1752 off Montevideo, Uruguay
($200-300)