Considered the Holy Grail of pinball. Only 10 made. Appropos nothing, I once worked for it's designer Rob Morrison.
I wouldn’t consider it the Holy Grail. Rare, yes, but just an ok game. Would much rather get my hands on a nice Medieval Madness or Attack From Mars.
If capcom would have only release that first :) ... I was able to play Big Bang Bar and Kingpin at a collector’s house :) ... I bought NOS Flash Gordon playfields from him ... nearly dropped dead when I saw it :).