Thank you for the replies.

I have planned to clear coat with Varathane. Perhaps I can pick up the phosphorous yellow/green I need in a couple days and the Varathane in a week or so, if all goes well. My playfield work has paused to wait for materials. Given the time Varathane takes to cure, maybe I can be playing pinball in a month or so.

In the mean time I have a rotten (dirty) coin door to deal with. The cabinet top/front steel bracket that locks the glass in place is rusty from past beer/soda spillage. Can't have that!