I don’t know why somebody would paint the inside of a cab and not do decals. If decals were original and in great shape, I’d say leave the paint alone in the cab. After looking at the sliders on the back of cab, they have definitely been replaced. Also, looks as if somebody either left the front decal alone or went out of their way to put the serial tag on.
This also appears to be a sega/DE/stern coin door.