My Punch-Out cabinet still has its original black finish, though it is a bit beat up. At some point, someone "touched-up" the lower halves of the sides of the cabinet with black spray paint. It is a single, thin, hastily applied coat of paint that is a little shinier than the original black finish. It is not terribly noticeable unless you look closely but I'd rather it wasn't there. I'd rather have the original beat up finish showing than some half-assed touch-up job with a spray bomb.
I don't know what the original finish is exactly, but it doesn't seem to be ordinary paint, and it doesn't seem to be a laminate or a vinyl. Maybe something similar to the finish on "melamine"? Does anyone know what Nintendo used on Punch-Out cabinets? Anyway, since it doesn't seem to be paint, I'm hoping it will be impervious to paint strippers that would remove the spray paint, leaving the original finish intact (correct me if I'm wrong).
Does anyone have any suggestions on what type of chemical to try on it?