Potosi, Bolivia, cob 8 reales, Philip II, assayer B (2nd period), rare error with denomination as "oVIIII". S-P6; KM-5.1. 27.18 grams. Broad flan with choice full shield and cross-and-tressure (every detail clear), much bold legend and crown and heavy-dot borders, curious denomination with "extra stick" in border, AXF with toning around details. (Estimate: $500 - 750)