For a few years Hollywood Park produced a set of brass chips for the Chinese New Years. There was a $1, $2.50, and $5 (along with a ceramic $8 plaque). These were real chips (insofar as they were redeemable but I am not sure they would receive play). At the time I would call the cage and have them set aside. I would mail them a check and they would fedex me two sets each year. You can see the chips listed at the link below. They later changed to all Chipco for the denoms (with octagon shaped chips) and then to a different brass-type material

http://www.themogh.org/cg_chip2.php?id=CAINHP&p=010000000000#60