^Lot 592 Potosi, Bolivia, cob 1/4 real, Philip II, assayer B to left, no mintmark, very rare, ex-Ugaz.

Potosi, Bolivia, cob 1/4 real, Philip II, assayer B to left, no mintmark, very rare, ex-Ugaz. S-P10; KM-unl; Cal-unl. 0.72 gram. Broad flan with nearly full legends and crowns, full castle and lion, full and clear assayer to left (broken punch that resembles an R, probably from B's 3rd period) and no mintmark (first we have seen), Fine+ with dark areas from oxidation. Pedigreed to the Jorge Ugaz collection.