10 Dollars ECU - Denmark

Liberia issued a long series of "ECU" pieces in the late 1990s and early 2000s bearing European national themes — despite having no connection whatsoever to the European Currency Unit, which had itself ceased to exist when the euro launched in 1999. By 2003, the ECU was four years defunct. These pieces were produced for the collector and souvenir market, not circulation, manufactured by private minting houses and licensed through Liberia's notoriously permissive coin-issuing arrangements.

Denmark never adopted the euro and remains outside the eurozone to this day, having negotiated an opt-out in the 1992 Maastricht Treaty — the same year Danish voters initially rejected that treaty in a referendum.