Watch List notes:

Potosi, Bolivia, cob 8 reales, 1669E. S-P37b; KM-26; CT-344. 25.59 grams. Full but partially flat pillars-and-waves (doubled) and cross, three dates including full 1669 in legend, darkly toned, minimal surface corrosion. Unidentified ca.-1671 wreck in Seville Harbor, Spain

Estimate: $200-300