1820 Crown George III LX Edge Year Reverse 1820 Crown George III LX Edge Year - 1820 Crown George III LX Edge Year: This design was minted 1818-1820 ('Last' or 'New' coinage). Production used Matthew Boulton and James Watt created steam-powered machines.
1820 Gold Sovereign Obverse 1820 Gold Sovereign - The 1820 Gold Sovereign was the last sovereign to be issued during the reign of King George III.