Not RT Plastics. Chinese-made injection-molded plastic from 2003-2004 or so, no metal slug, glossy laminated label in a recessed center. That particular line was called Las Vegas Pro 9g.
Interesting chips; sort of the prequel to china clays. I have a large set of about 3200 chips; never have gotten around to relabeling them. Would be a decent budget set pickup for 5c/chip or less.