Cool Vintage Circles Necklace Movement in Gold Tone

Cool vintage gold tone necklace with moving pendant. The main pendant measures approximately 1 7/8" in diameter. The vertical bar, attached to the smaller disc pendant, dances back and forth. If you compare the pictures, you can see the bar and small pendant in different positions. The closed chain measures a drop of 13 1/2", so you slip it over your head to wear. Slight color loss on the chain. Great piece for vintage jewelry collectors. Brings back memories! Questions welcome. From a smoke free home.