There's a restaurant down the street from me that's had a non-working cocktail Ms Pac for a long time. I offered to look at it a couple days ago.
It appears to work, but the monitor chassis is missing. It appears to be a G07 tube, but the frame is...weird. There's no place to actually mount a chassis to.
Last cocktail I worked on was a few years ago, but IIRC it was just a standard monitor frame (shelf mount), and it mounted using both the front and bottom holes.
This one was odd. That's why I'd like to see pictures of how they mount.