Brian,

There are probably over 700 casinos that are open in the U.S. and to that you can probably add another 300 if you cound card rooms, cruise ships and casinos in the Caribbean and so forth. That's 1,000 casinos with "common" or current chips. There has to bunch of common chips that almost every chipper needs. I know that there are a bunch of common chips that I need. Just look at my want list on the link below. So bring what you have.