Paris, are you talking about the light fixtures? I've seen very similar lamps in several trailers (including mine!) and period advertising, though none had decorative sticks on them like the one on this trailer. Intead, all the original lamps I've seen have a grill of decorative cut aluminum sheeting (with brass plating) and a liner of fiberglass lampshade paper (not asbestos, thank heaven) riveted to it. You could probably pick up a replacement grill at a rally (lots of folks just don't like these). Alternatively, if you feel crafty at a metal brake, you could probably fabricate a reasonable looking substitute--similar looking sheet metal and fiberglass lampshade goods are still available. I'll try later to see if I have a photo to post. I am weighing whether I want to plate all the brass finishes to chrome--though that's a decision far from my current structural efforts (we have returned to finishing up structural efforts after a two year hiatus--see my blog for the full dirty story).
As for the interior--ours is also repainted with thick layers of latex paint. The thing we've noticed is that the latex retains much more dirt than Zolatone does. The harder smooth surface of the Zolatone sheds dust and is easier to clean. Eventually, when we've progressed through our structural efforts, we're going scuff the latex and get the zolatone reblown. No need to strip, at least according to the Zolatone technical rep I spoke with several years ago (although it will, as I recall, need to have primer applied).