Watch List notes:

Potosi, Bolivia, cob 1 real, 1672/1E, rare. S-P37b; KM-23; CT-unl. 2.72 grams. Weird shape with two (nearly) straight (parallel) edges, bold full pillars with choice date showing a very clear 2/1, doubled cross, nicely toned, edge-split, looks corrosion-free. With ROBCAR photo-certificate #M110252. Recovered from: Consolacion, sunk in 1681 off Isla Santa Clara, Ecuador

Estimate: $100