I'm looking to buy (or trade) for this style of steel body that holds one 15" dia. convex glass ad lens in front with a snap ring. I'm interested in complete signs or just the body, and I will pay very generously! Please PM me if you have one you might be interested in parting with.
I have not seen one of these yet that held a gas lens, they were 1930s lighted display signs for beer, wine, bread, and paint (are what I've seen advertised in them so far). I think it would be an expensive proposition to reproduce these, and for the cost, not sure the market is there. There are already inexpensive aluminum single-lens holders on the market for both 13" & 15" lenses.