Dealers and floorman would use them as you descibe on roulette, but also for keeping track of markers. When a known player would come up to a crap, baccarat or 21 table you could hand them $1000 or whatever they requested in chips and mark it with these lammers. That way a player could start playing before signing for his marker. The lammers I have start at 5 and go all the way to 50,000. They came from some Harrah's crap tables that I use to have. Craps and Baccarat tables actually have special built drawers under the game to store them. They are generic to all casino's......Doug