Take a look at this interesting Colorado silver slot token. Celebrates the Colorado gold-rush that took place about 10 years after the 1849 California gold strike.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280629964196&ssPageName=STRK:MESELX:IT

Current bid is just about the value of the silver in it. You get the gigantic gold nugget free .