The U.S. dollar is the currency most used in international transactions. Several countries use the U.S. dollar as their official currency, and many others allow it to be used in a de facto capacity. It's known locally as a buck or greenback.
The Icelandic krona (meaning 'crown') separated from the Danish krone after the dissolution of the Scandinavian Monetary Union at the start of World War I and Icelandic autonomy from Denmark in 1918. The first coins were issued in 1922.
