Potosi, Bolivia, pillar 8 reales, Charles III, 1769JR, regular 9 over fancy 9, no dot after king's name. Janson-58.3.3; CT-unl (Type 106); KM-50. 26.90 grams. Lightly toned AXF, with tiny bit of extra metal in field below QUE, scarce and interesting variety that is actually a muling of dies because the fancy-9 issue shows a dot after the king's name, which this does not.
Estimate: $350-500