http://www.thechipboard.com/cgi-bin/bbs521/webbbs_config.pl/read/772870

Regarding this chip:

As far as I can tell (after just going through the film frame by frame), there is no chip from "Leaving Las Vegas" that resembles this one. The statement: "I remember seeing small crown chips used with the Ballys logo in the scene where they are playing high stakes poker in the suite.. made me think there was confusion between the other Nicholas Cage Vegas movie "Honeymoon In Vegas". That had a high stakes poker game. I will go through that one sometime this week and see if the chip could be a prop.

In the meantime, here are the shots I captured from "Leaving Las Vegas"