Great Britain, one dollar, oval George III countermark (1797-99) on a Lima bust 8R of Charles IV, 1795IJ. Sp-3765A; KM-638. 26.74 grams. The host is VF and the countermark is well-detailed XF, with traces of light rainbow toning and luster, slightly crude rims (as made), popular type once referred to as "the head of a fool on the neck of an ass."
Estimate: $600 - 900