Yes, definitely Agua Caliente. Good find/connection. I guess the stock goes up now with those A/C chips.

Everything is clear from my Agua Caliente web page, where:

Prof. Paul Vanderwood, the author of "Satan's Playground: Mobsters and Movie Stars at America's Greatest Gaming Resort [Agua Caliente]" (the book is available at Amazon.com), has written me and confirmed that the JC- and BL-initial chips were personal chips of the two Border Barons. He says,

"The Baja California Co. would be the name under which the Agua Caliente enterprise was legally incorporated. ... ... The Border Barons founded and incorporated the Baja California Co. ... ... On the chips, "JC" is most definitely the baron, James Crofton, who was in charge of the casino operation at the spa. "BL" was Baron Long [his birth name!], also one of the entrepreneurs.... ... Both men were vain promoters beyond belief. And they did hold big stake, poker games for friends and others in their homes. Or, as I said, they organized and clandestinely staged illegal games on the U.S. side--clandestinely, ha. They paid law enforcement a nice sum to look the other way."

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Robert
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"The Lone Wolf in Mexico" (1947) roulette scene. Movie stars Gerald Mohr (2nd on the left?) as the "Lone Wolf," but I don't recognize anyone else in the still. I own a lobby card of the same scene.
http://www.antiquegamblingchips.com/StillsB_OtherMaleActors.htm