Casino history lives in worn cards, roulette wheels marked single-zero or...

https://www.historyfiles.co.uk/support/historyES431-Cards-Wheels-and-Reels.htm

Casino history lives in worn cards, roulette wheels marked single-zero or double-zero, and slot reels built for play. In 1895, a San Francisco workshop shows how small objects hold the marks of changing games and public life.