I have done a photo that may be of interest. Here is a metal Foundry and Red Copper resin Sea Peoples comparison photo.
Red Copper are available so far from Blitzkreig Miniatures, Lancer and Studio Miniatures(eBay from Greece with website soon). Studio miniatures have some amazing Myceneans (own range)coming very soon with Hebrews and Philistines plus more biblicals planned (resin)