Watch List notes:

Potosi, Bolivia, cob 8 reales, 1650 (modern 5, dots between digits), assayer O, with crowned-L countermark on cross. S-P35; KM-19b; CT-509. 20.10 grams. Bold full dot-P-dot-O-dot to left of full shield, nearly full countermark on cross, toned, thin from corrosion all over. With Marex tag #91-8R-1190. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $300-450