ilyaz wrote:I tried scratching a piece with a flat screwdriver. Both the shiny outside and the dull inside of one of the pieces scratched easily. What does this mean?
Nothing. You need to scratch the finish off the surface to see what type of metal is underneath. You did the magnet test already, good. Now get a file, sandpaper, or whatever you can find and really scratch the surface. If you only see yellow metal, it's solid brass. If you see silver metal, it's brass plated something. Brass plated stainless would be rare. The stampings are most likley brass. The fancy casting is plated pot metal, or a zinc alloy casting. The light sockets are brass, or all I have ever seen are, so start with them to get a idea of what you are looking for.