I found this box in my girlfriends garage with the California Club Chips. The chips for sure came from the Las Vegas Hilton because that is where her ex husband was a dealer. His dad ran the Hilton for quite some time and she had told me he gave both boxes of chips to his son to pratice dealing with. Now his father was at one time a big exec in Vegas in the late 40's and 50's so I would imagine that is where the Califonia Club chips came into play but as far as the Hilton ones maybe they were grabed before they were marked???? I have no idea. Thanks for your imput though as it does open new ideas into these chips.