10 Dollars ECU - Finland

Liberia issued a flood of gold-plated commemorative pieces in the early 2000s targeting the European collector market, and this ECU-series coin is a product of that campaign. The ECU itself had ceased to exist in 1999 when it was replaced by the euro, making a 2003 issue denominated in ECUs a curiosity — a coin referencing a defunct unit of account, struck four years after that unit disappeared, by a country that used neither.

Finland joined the eurozone at its launch in January 1999, rendering the ECU connection doubly anachronistic.