Copper parure

I never ever wear copper. The color really doesn't go well with my skintone. I really like this set though. It came with a big lot of other costume jewelry I once bought. It's really a pitty it never leaves its box, that's why I decided to share it with you.
It consist of a necklace, clip-on earrings and a matching bracelet. All in copper. I don't think there are any markings on it, but I believe this set to be from the sixties or seventies. I think it has some modernist touch to it, don't you think so?
Anyone familiar with this set or any idea on the maker?