^Lot 1375 PERU, Lima, pillar 1 real, Charles III, 1766 JM, extremely rare, ex-O'Brien.

PERU, Lima, pillar 1 real, Charles III, 1766 JM, extremely rare, ex-O'Brien. Yonaka-1R.66; Cal-349; KM-61. 3.16 grams. Key date of the series as noted by both Gilboy and Yonaka (who rates it R4 and observed just one example clearly inferior to the present coin), very deeply toned Fine with minor surface porosity and traces of encrustation, slightly off-center pillars side. Pedigreed to the John O'Brien Collection, with his tag.