The EURO (EUR) dates back to the 90ies but did not enter physical circulation until 1/1 2002 and is issued by the European Central Bank (ECB). It's believed to be the second most traded currency in the foreign exchange markets after the US-Dollar. 19 out of the 28 countries within the EU uses the EURO as official currency. The Euro comes in seven different bills ranging between 5-500€ and there's also 8 different Euro coins the biggest one being the 2€ coin. The Euro is often used to deposit money to gamble online and is an appreciated gambling currency.