After Bally’s success with Ballyhoo, their business exploded. Between Ballyhoo and Carom, they made more than 120 different models. As you can see, in just five years they became larger, more complex, and more automated. The window on the backbox shows the score, an exciting innovation called a totalizer.

This is an example of a payout machine, where you might get more money out than you put in. This feature arguably made it a gambling machine, causing concern about how pinball was corrupting the youth, encouraging vice, and supporting criminals. However you see it, it was big business: 45 of those 120 models made by Bally gave payouts.