I’ve only seen cash play meters in Gottlieb’s sample games. My Joker Poker is a sample and has a pair of meters in it.
Gottlieb AAB games have factory wiring for an optional meter, too. When I restored my Lucky Hand in 2014, I grabbed a meter from a parts machine, zeroed it out, and installed it. As of today it reads 1,415 games. That would have netted me around 350 bucks at 25¢ a play. At this rate, it’ll take another nine years before it pays for itself. I better start charging money. It’s my wife’s favorite game.