Potosi, Bolivia, cob 4 reales, assayer Z(?), with crowned-L countermark on cross. S-P34; KM-17a. 9.52 grams. Good full shield, nearly full countermark on crude cross, moderately corroded all over and with edge-loss, uneven toning. With Marex tag #91-4R-0671. Maravillas, sunk in 1656 off Grand Bahama Island
Estimate: $300-450