To some rock/pin fans, an autographed pinball machine definitely adds some value if done in a tasteful way.

The same goes for street rods. Every year guys clamor to car shows to have Paul LeMat, Candy Clark, Bo Hopkins, famous race car drivers, and any other hot rod-related celebrity out there sign the dash of their cars.

If you build a '32 Graffiti Coupe clone there's nothing better than having Paul LeMat sign the glove box door with a sharpie.

If I had a celebrity sign a pinball playfield though, I'd want it to be a nice one - not some blown out one. After it was signed I'd have it clear-coated for posterity. I'd love to have Ace sign my '79 Kiss machine. I'd probably have him sign the backglass with a silver sharpie though so it would stand out. To have all four original bandmembers sign the backglass would definitely add value to a Kiss machine for me.

The rock-themed pins are my favorites. They hold value that goes far beyond a pinball machine. They are actual pieces of rock history. Even people who don't necessarily like pinball love the rock-themed pins. Especially the Bally pins like Kiss and Rolling Stones when the bands were in their prime (or closer to it than they are today).