Copper necklace linked leaves mid century vintage jewelry ll1075

This 50s or 60s copper necklace is a series of graceful linked leaves or stylized flowers with leaves at their bases. This forms the center of the necklace and is 8.5 inches and the simple copper chain makes the total length of the necklace 17 inches. There is some oxidation on the necklace and I'm not sure if it is deliberate or age related. I tested a small area and decided it could be a combination of both. The piece is not signed.