That’s the sound of money — metal coins hitting a metal tray — signifying slot or video poker winnings at one of the dwindling number of coin-operated machines still in use in the Las Vegas ...

this coin-operated holy water dispenser was used in Egyptian temples to dispense water for ritual washings. Worshippers would place a coin into the machine and receive holy water to bathe themselves ...

Despite the modern upgrades, the El Cortez retains a touch of nostalgia with a row of coin-operated slot machines, a rarity ...

These coin-operated amusement machines dispense prizes ... "We're not looking to have gaming slot machines inside a grocery store where families are trying to shop for groceries." ...