20 ECU Air Traffic Control

The ECU — European Currency Unit — was a basket currency used as an accounting unit within the European Monetary System from 1979 until its replacement by the euro in 1999. Luxembourg was among the smallest EMS members by economic weight, yet issued a string of ECU-denominated collector pieces through the 1990s targeting the numismatic market rather than any circulating function. This piece commemorates Eurocontrol, the intergovernmental organization headquartered in Brussels that has coordinated European airspace management since 1963 — an organization in which Luxembourg holds founding member status.