This auction - http://cgi.ebay.com/Matching-Pair-of-Carson-City-Antique-Casino-Chips_W0QQitemZ140092886063QQihZ004QQcategoryZ63756QQrdZ1QQcmdZViewItem - is for two "antique" chips from Carson City. Actually, the Nugget had these on its one craps table until about two years ago, and they were extremely plentiful.

The seller has listed this as a "featured plus" auction, which carries with it an additional $19.95 in listing fees. He also has a reserve price. The chips shouldn't go for more than $2-$3 each, but on , I guess you never know.