There is a pretty scarce purple $1 Beverly Hills CC chip on ebay . (Not my auction). If you collect Northern Kentucky illegals it's probably one you are missing.

http://www.ebay.com/itm/BEVERLY-HILLS-1-00-PURPLE-PROFILE-GAMBLING-CHIP-RARE-NEWPORT-KENTUCKY-/172633610261?hash=item2831c3d815:g:leEAAOSw~CFY7V1s