In English a reckoning counter. Also Jeton (French) & Rechen-pfenning (German). A coin-like object used in the calculation of accounts. Jettons are known from England, France, Netherlands, Germany, Austria, Poland, Czechoslovakia, Hungary, Italy, Portugal, Spain & probably other countries. Originally "jettons" would have been pebbles or pieces of pottery (the word calculate derives from Calx - pebble). The first specially struck jettons seem to be French mid 13th century.