Watch List notes:

Santiago, Chile, 1/4 real, Charles IV, 1793, encapsulated NGC XF 40, finest and only specimen in NGC census. CT-1427 (under Rioja); KM-56. Very lightly toned and with slight luster, better than the slab grade would indicate but finest nonetheless, a scarce and enigmatic issue without mintmark and variously ascribed to other mints in some references. NGC #3905578-005.
($125-200)