Great Britain (London, England), 1 dollar, oval George III countermark (1797-99) on a Potosi, Bolivia, bust 8 reales, Charles III, 1776PR, encapsulated NGC VF 20. Sp-3765A; KM-624. Ironic combination! A British countermark on a Spanish colonial coin dated 1776, the year of American independence and the beginning of Spanish undercover aid to the American revolutionaries. Also an issue nicknamed at the time "the head of a fool on the neck of an ass." Choice XF countermark (scarce on a Bolivia 8 reales), VF host coin with only a rim bruise to note, beautiful light gold toning with dark blue below the bust. ($800-1200)