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

https://wiki-wire.win/index.php/How_Did_Casino_Equipment_Change_from_Cards_to_Wheels_to_Reels%3F

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.