Casino history lives in objects left behind: cards shaped for play, roulette...

https://rileysinspiringchat.quillnesty.com/posts/what-does-it-mean-when-a-slot-keeps-reels-but-changes-the-mechanism

Casino history lives in objects left behind: cards shaped for play, roulette wheels built around single-zero or double-zero odds, and slot reels that turned chance into spectacle. A look at 1895 shows how small mechanisms carry big stories.