Watch List notes:

Potosi, Bolivia, cob 4 reales, 1653E, dot-PH-dot at top. S-P37a; KM-18; CT-740. 13.41 grams. Solid and uncorroded (also deeply toned), with one full pillar (the other flat) with bold PH at top, cruder and off-center cross with bold king's ordinal IIII in legend, two dates. Pedigreed to the Rob McClung collection. Capitana, sunk in 1654 off Chanduy, Ecuador

Estimate: $200-300