@jayfiggy I believe the Comstock Casino chips you are searching for originated from a card room located in Santa Clara, CA.
According to the ChipGuide it closed in 1983 which was slightly before my time.
https://chipguide.themogh.org/cg_chip2.php?id=CASCCO&v=1321037759
I've been racking my brain and I actually vaguely remember gambling at the Comstock Casino in Tracy CA once or twice about 25 years ago. I was hanging out with my college buddy and his brother just happened to be dealing at this card room at that time. I specifically remember this place was using RT Plastic chips or something similar.
https://chipguide.themogh.org/cg_chip2.php?id=CATRCC&v=83367670
Believe you me, if I had seen THCs in circulation... I might have gone bananas & harvested the shit outa this place, to the point where the owners would've been wondering where all of their $0.50, $1 and $2 chips disappeared to

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