Great Britain - Dollar 1801 Mo, Silver, GEORGE III 1760–1820 Octagonal countermark 'George III' on 8 Reales. Mexico City mint. Bust of Carlos IV right. Rev. crowned arms between the columns of Hercules.S. 3766; ESC 1868.Between 1797 and 1804, foreign dollar-sized coins were counterstamped by the Bank of England as a reaction to an economic depression.26.91 g. Turgoise blue cabinet patina. Coin: Extremely fine. Countermark: Very fine