Watch List notes:

Potosi, Bolivia, bust 1/2 real, Charles IV, 1808 PJ, no stops on reverse (rare), NGC MS 61. Janson-80.20.3; Cal-unl (cf 319); KM-unl (69 for type). Bold strike (slightly off-center), deeply rainbow toned with much underlying luster, tiny rim-split on reverse, dramatic error that was not discovered until 2013 and is listed in Janson (2020 edition, with another example pictured) for four times the normal value. NGC #2787397-006.
($200-300)