because they are really just an advertisement chip issued by the Cafe chain and not a "casino" chip issued by the Hotel/Casino. I, too, had the entire set of Cafe chips plus the Holiday chips but sold the whole lot for next to nothing recently. The same thing goes for the pins...I collected the PinDex pins but won't collect the PinSanity pins for the same reason. Hopefully, the event will eventually return to the HRH. Steve B