The History Channel runs a series on "Breaking Vegas".
A retired jeweler was able to counterfeit $10 slot machine tokens. He'd play for a while, then go cash in the
phoney tokens.
The investigation started when a NJ casino reported an overage of $10K in inventory. Other casinos found similar overages.
One casino hasn't been able to cull all those tokens from their inventory.
Being a Blackjack player, on several occasions, I have asked dealers if there is a problem with fake 'chips', and each time I have received some noncommittal answer. Does anyone know how the casino's distinguish counterfeit chips? I would think that the $25 chip would be the most easily passed, whereas the $1 and $5 wouldn't be too profitable and the $100 would draw attention.