I finally got me an cabinet for my game room, got it off a local classified site.
Its a Space Invaders pt 2. It's never been in an actual arcade. From what I was told it was a floor demo for a local arcade dealer then the daughter of the company owner took it home and it sat in her basement getting very minimal use until I picked it up.
Works good. Still has the coin mech but has a bypass wired up for free play. I'm also missing the key, but other than those minor things.it looks pretty original. Even has some of what I believe is the shipping plastic hanging around the legs.
Pics are before I started cleaning it up.