Those were manufactured by Chipco and worked in a $1 slot machine. I have no info on the casino, but would be interested in the token, if available? The design did not catch on, but several places had them. Riverside in Laughlin, Longstreet in Colorado, to name a few. Also came in the $5 size.

An aluminum alloy hub with plastic discs sonically spot-welded to the hub.

Jim