Near-complete date-run of ten Potosi, Bolivia, cob 1R of Charles III, assayers V & Y (where visible), dated from 1760 to 1769 inclusive. S-P57; KM-42. 33.53 grams total. Fine on average, all toned, clear dates (a couple with two dates), most of cross and pillars on each. SEE INTERNET FOR PHOTO. (Estimate: $350 - 500)