jetton
/ˈdʒɛt(ə)n
/noun
A counter or token used as a gambling chip or to operate slot machines.In France the sculptor Germain Pilon was the first Contrôleur Général des Effigies, designing the royal portraits for medals as well as coins and jettons.
Origin
Mid 18th century: from French jeton, from jeter 'throw, add up accounts' (see jet1); so named because the term was formerly used in accounting.