Watch List notes:

Potosi, Bolivia, cob 1/2 real, 1663E, rare as from a wreck. S-P37a; KM-13; CT-1173a. 0.91 gram. Clear date below partial monogram, nearly full and well-centered cross, thin from corrosion but nicely toned. With ROCBAR photo-certificate #M100251. Recovered from: Consolacion, sunk in 1681 off Santa Clara Island, Ecuador
($100-150)