You must add a |reason= parameter to this Cleanup template – replace it with {{Cleanup|reason=<Fill reason here>}}, or remove the Cleanup template.
Numismatics (ancient Greek: Template:Polytonic) is the scientific study of money and its history in all its varied forms. While numismatists are often characterized as studying coins, the discipline also includes the study of medals, medallions, and tokens (also referred to as Exonumia).