My first pinball is the EM Bally Bon Voyage. Overall it is in pretty nice shape, and that especially goes for the back glass. As far as I can tell, it is darn close to perfect. If there are any flaws in it, they are very small and hard to find. Here are pictures of the front and the back.
Should I leave it as it is, and just continue to take good care of it?(I most likely will swap the lamps out for LEDs at some point).
Or, should I treat the back with the recommended Krylon that everyone uses, as a protective measure for the future?