A mid century Coro copper necklace made of textured copper leaf links with an extender chain and hook closure.
The necklace is 8.5 inches with an extender chain of 7.5 inches that takes it to 16 inches. You could add to the chain if you have a more substantial neck. It is signed Coro on the shepherd's hook clasp and on the back of one of the end links.
I believe the two jump rings connecting the leaves to the extender chains are replacements. They are not copper and are just a hair larger than the other jump rings on the extender chain. The rest of the necklace shows no signs of deteriorating finish so it is unlikely that those two rings would lose their copper tone. Please note that these non copper rings do not detract from the appearance of the necklace.