Potosi, Bolivia, cob 8 reales, 1728M. S-P44; KM-31; CT-885. 24.31 grams. Nice full pillars with bold date, full cross with second date below, round thick flan with light surface corrosion only. With photo-certificate. Recovered from: Princess Louisa, sunk in 1743 off the Cape Verde Islands, west of Africa ($200-300)