Casino history lives in the objects people handled: marked cards, roulette...
https://marcosbrilliantchat.fotosdefrases.com/why-do-playing-cards-need-plain-backs-in-casino-games
Casino history lives in the objects people handled: marked cards, roulette wheels made for single-zero or double-zero play, and slot reels. An 1895 San Francisco workshop offers a glimpse of how gambling changed in paper and metal.