Harrah's from 1981-2001, mainly in the pit also. The name dosen't sound familiar, but I was usually working the graveyard shift. Our paths must have crossed somewhere. We still had occasional $2.50 yellow chips show up and canceled (drilled) as late as 1985/86. I was hoping to bid on that auction, for I have not acquired one of those chips yet. Ironic, because I would drop them in the money box whenever we came across them. Wasn't a collector back then.