Potosi, Bolivia, cob 4 reales, Philip II, assayer B (1st period). S-P4; KM-4.2; Cal-525. 13.45 grams. Broad flan with choice full crown and nearly full legends (HISPANIARVM with H) and prominent borders of tightly spaced dots per the period, full but central flat shield and cross (slightly doubled), full P-B and denomination o-iiii, attractively toned VF.
Estimate: 400 - 600 USD