Watch List notes:

Potosi, Bolivia, cob 4 reales, 1651 E, with crowned-L countermark on cross. S-P36; KM-17b; Cal-1108. 13.73 grams. Broad round flan with central weakness, full countermark near center, full 1(6)51 date, faint trace of assayer E to right, much toning (brownish) and light encrustation, one edge-split. Recovered from: Capitana, sunk in 1654 off Chanduy, Ecuador


Estimate: 300 - 450 USD