Alan, the listing below is from a casino equipment supplier directory. I think Chipco made or distributed the "chipper champ" roulette chip sorting machines.

Just a guess -- these may have been used at a Chipco/TCS joint display at a trade convention, perhaps demonstrating their equipment.

I have seen these chips before, and have the $5 one in my collection.

TCS America, Inc.
3325 Ali Baba Lane, Ste 612
Las Vegas, NV 89118
PH: (702) 798-0500
Supplying: roulette wheels, chipper
champ machines, winning number
displays for roulette, baccarat (mini &
standard) & blackjack table games,
integrated roulette wheel analysis
systems, table game layouts &
automatic card shuffling devices.