Gambling chips

Gambling chips were a temporary form of currency used for gambling in casinos.

History
In the Toyroom, gambling chips were used in a game of cards between Gaylord Lefevre and the Celestial Toymaker, despite the Toymaker having no need of money. (COMIC: )

In 1963, the Twelfth Doctor won eight hundred thousand dollars' worth of chips on a craps table in the Sands Hotel. (COMIC: Gangland)