This is such a Fabulous copper necklace! It has 13 links with fantasy moons on them in a very modernist designed. It has TWO LINKS in one. Insides of the moons were are enameled burnished black when the necklace was made. Renoir/Matisse copper jewelry is highly collectible. This necklace has a distinct "cross over of eras" design - between the Art Deco and Streamline Modern periods and the Retro Modern period. The necklace was however not made until the 1935-1945 Retro Modern Era.