If you find a token inside, that can be a clue. I got TZ and Slugfest combo deal from a guy who appeared to have just got them in a house flip and a loose token inside confirmed they were in an arcade on Hilton Head Island at one time.

You can assume if there is a bunch of rust under the lockdown bar it was probably routed and had more than one drink spilled on it.

I got an traded in TWD pro from a dealer in north FL who said it came from south FL. The giant high scores confirmed they were the initials of a top south FL tournament player.

My Fish Tales has the export type 3 coin slots which are labeled 1DM, 2DM, 5DM (Deutsche Marks), and the apron card said 1DM = 1 Speil, so that confirms it has visited Germany more times than I have.

The stories they could tell.