Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B (1st period). S-P4; KM-4.2; Cal-525. 13.50 grams. Excellent full shield and cross-lions-castles ("dancing" lions), much legend (ISP- without H) and full but mostly flat crown, bold assayer B (weaker small-P mintmark), silvery AU.
($250-375)