The Earliest coin age began around 600 BCE according to different scholers 'The Lydians Stater' is considered to be the world first coin made with gold and silver , name was taken from Lydia.
Punch mark system was introduced in Kabul Valley Circa 500- 300 BCE.
Chart of Ancient Currency
Euro Currency
Euro came in Europe in 1999, January 1 it's main purpose European union. Euro was accepted by all EU except UK and Denmark.
By the 2002 it was circulated all over Europe.
United States Dollor Currency
In America "The mint Act" was passed on April 2, 1792 which established coinage system in USA and Dollor is considered as main Currency of America. After adopting USD, America became the first country in the world accepted decimal system of Currency.
