Having owned Crystal Castles and many other silk screened atari cabinets I can say that a few hours with a careful hand and a sharpie will have that sideart looking good as new again, they screen the black on it last, and the black is always the first color to rub off. You will probably find that 90 percent of the flaws in your artwork are missing black.
Unfortunately, the biggest cosmetic problems on this one are:
1. Front art has faded reds. All the gems are now almost white. (Strangely, bentley's hat is still perfect red!)
2. The white on the sides has yellowed. Can anything be done about that?
Other than that, I already ordered repro marquee, speaker overlay, and CP overlay from ArcadeRenovations.