Incredible Huge Ball and Lozenge Vintage Sterling Bead Necklace

this amazing vintage chain is probably from the 70s, judging by the style. It has a spring ring that is largely integral to the chain so you don’t really see it, but it allows the chain to be opened up and worn wrapped. the chain measures 34 inches long can be worn long or doubled around the neck or quadruple and worn as a bracelet. it weighs 78.41 g