Potosi, Bolivia, 1/4 real, 1799, PCGS MS 65, finest known in the PCGS census. Janson-81.6.3; KM-82; Cal-147. Deeply rainbow toned with much blue color over luster, boldly re-punched final digit 9 in date, currently the sole finest of eight entries in the PCGS census, exceeded only by a single MS 66 at NGC.
Estimate: $200 - $300