I found this story about the recovery of a rare 1980s video game cabinet to be potentially inspiring. What the collector found was that he had not only obtained a rare copy of the game Aztarac, but that the copy had been delivered by the manufacturer to the games designer, who had played the completed game only once and the quarter used was still in the coin collector.
That’s right, he has the first production cabinet, owned and played by the games designer on only one occasion, and he has the coin used to play that game. Both are artifacts with potentially major charges.
For the whole incredible story see:
Centuri Aztarac: Finding THE Holy Arcade Grail? ? The …<https://arcadeblogger.com/2017/01/20/centuri-aztarac-finding-the-holy-arcade-grail/>