numismatiikan
Numismatics is the study and collection of currency, including coins and paper money. It is a branch of the broader field of coinage and currency history, which also encompasses the study of the economic, political, and social contexts in which coins and paper money were used. Numismatists, or coin collectors, often focus on specific types of currency, such as ancient coins, medieval coins, or modern coins from particular countries or regions. They may also specialize in certain types of coins, such as commemorative coins or error coins. Numismatics can be pursued as a hobby or as a profession, with some numismatists working in museums, libraries, or other institutions to preserve and study coin collections. The study of numismatics can provide valuable insights into the history of a particular region or time period, as well as the cultural and economic factors that shaped the development of currency.