A jeton is a type of gaming chip commonly used in European countries. They're normally thinner than a typical clay casino chip and come in different sizes. If you'll click the "Search" feature above and search for the word jeton you can see some pictures that people have posted of various jetons over the past weeks. Here's a link to one such post:

http://www.thechipboard.com/cgi-bin/tcb/tcb.pl?noframes;read=538111