This machine was found on the curb knocked over, waiting to be picked up by the cities trash collection service. I went ahead and picked it up (it was night and I had no clue as to the condition, just tossed it in).
Well, finally had a chance to look it over today. The bottom has some water damage, and there looks to be moisture damage along a good chunk of the T-Molding. Monitor looks thrashed. Original Space Invaders boards are missing. From the damage on the bottom of the cab, the power supply board is prolly dead as well. On the positive side, there's only a little chipping on the paint on the monitor glass, and both the marquee and controls seem in good shape.
Not really sure what to do with it yet, so I have it sitting in my storage shed. I LOVE the size of the cabinet, a lot smaller than a standard cab. At least while its there it won't get more damage and I can determine whether to completely restore it or to just restore the outside and run a Raspberry Pi board inside or something.