I have a number of older limited edition chips currently on ebay. Ending this evening are numerous Flamingo "Cool Bird" chips.
Later this week I have:

Set of two Playboy Club chips!!!!
SCARCE Obs Flamingo RENO CAR SET (complete, matching numbers)
SUPER RARE Obs chips from the former PIONEER in Las Vegas
Several sets of baseball chips
Check them out, on ebay:

click on SEARCH
click on BY SELLER
type in "comstock2u"
click SEARCH