Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B (5th period), border of x's on reverse only. S-P14; KM-4.3. 12.34 grams. Good full shield and cross, bold P-B and denomination, nicely toned, AXF but with surface corrosion (minimal) as from unspecified salvage. (Estimate: $100 - 150)