Tom -- several years ago, I bought about 20 similar chips at a swap meet (none with Hilton mold, but Dunes, Caesar's Palace, Stardust & Nevada molds. Asked around some then and was told by several knowledgeable collectors (including, as I recall, Allan Myers & Mel Jung), that they were manufacturers color sample blanks. Just traded the last of my extras (except for the Nevada molds) this week! ----- jim o\-S