So I'm at my wife's friend's house playing her dad's pinball collection. One non-working game caught my eye. It's a GamePlan Super Nova. Her dad says when he bought it years ago, he was told that it was a prototype game. Looking at pics online, it looks like most I can find have white on the cabinet and backglass where this one is mostly purple with some orange. No white paint at all. He is in the Chicago suburbs, so it would makes sense that prototypes would be floating around the area.
Anybody have any info on this? It's not currently working, but he's curious if it's rare, sought after, or worth much of anything because he might want to make a trade to change up his collection. I figured I'd see if anyone here had any input! Thanks!