World
Worldwide, there are more than 180 official currencies, and it is estimated that there are approximately 145 billion coins in circulation. Some currencies are used by multiple countries, such as the euro, the US dollar, and the CFA franc.
Collecting world coins is popular precisely because it can be done in many different ways. It can be done by country or region, but also by time period or theme. World coins are also interesting for precious metals investors, as many countries have issued multiple investment coins (bullions).