The previous owner attributed this as "France Jeton Charles VII 1483-1498", but this looks more like a coin than a jeton. Can someone confirm or correct the attribution?
It appears to be silver; it is 23mm in diameter, and weighs about 1.5 grams.
http://www.elfreeman2.com/t18/12le02o.jpg
http://www.elfreeman2.com/t18/12le02r.jpg