Potosi, Bolivia, cob 4 reales, 1727Y, (Louis I). S-P43b; KM-A35; CT-30b. 10.18 grams. Thin from corrosion but with full cross and shield, two dates (neither 100% clear), non-toned. Recovered from: Princess Louisa, sunk in 1743 off the Cape Verde Islands, west of Africa
($100-150)