GREAT BRITAIN. Great Britain - Mexico. Dollar, ND (1797). George III. PCGS EF-40 Gold Shield; Countermark: EF Details. S-3765A; KM-634. Bank of England issue. Type I countermark; bust of George III within oval indent on a 1794-Mo FM Mexico bust 8 Reales of Charles IIII (IV). A popular series, this example features a host with attractive toning and hints of shimmering luster along with deeper highlights as one approaches the peripheries.