I've come into contact with a guy that's supposedly in possession of an early, rare, prototype penny arcade machine. I'm trying to schedule a time with him where I can take a look at it, since the guy claims it has some historical significance (as it pertains to arcade machine history, ie: design/development). Not sure what he means, but I'd like to do some research so that I have a decent understanding about these types of devices if/when I get to see it. He's a little loopy, so who knows?!
Any great websites with historical data, info, etc?