George III (1760-1820), Emergency Issues (1797-1799), Oval Countermark Issue Dollar, struck over Mexico, Charles III, 8-Reales, 1788-FM, Mexico, security edge, 26.61g, 12h (ESC 129; Bull 1852; Spink 3765A), the host coin rubbed to higher points, yet with a light tone, approaching fine, the countermark pleasingly struck, good very fine