of the fake brass chips being sold as actual movie props on :

http://www.ebay.com/itm/6-TANGIERS-CASINO-VEGAS-POKER-CHIPS-ACTUAL-PROPS-USED-MOVIE-CASINO-/260866066741?pt=LH_DefaultDomain_0&hash=item3cbcd44935

You can but all of these chips (except the $500) very inexpensive here:

http://www.oldvegaschips.com/1tangiers.htm

And at many other chip sellers.