If you are looking for those "fantasy" chips it may be a good make a post at www.chiptalk.net if you haven't yet. One member whose handle is "noelsarchs" was the main proprietor of the Palmas chips and also was the leader of the group that created the clones afterwards.

The Kings Crown, Ritz Carlton and several others are also probably available through some of the members as there. There are members with playable sets of these chips on the board so they may be willing to sell or trade some of the stashes they have.

Good Luck in your search,

Dan