Vintage mid-century sterling silver necklace featuring double coil panels in a striking modernist design. The style is reminiscent of coiled wire “snake” jewelry by renowned makers such as Matilde Poulat (MATL), William Spratling, and others of the era. The necklace is centered with a large black cabochon stone, possibly onyx that opens to reveal a hidden compartment. Measures approximately 19 inches in length. In good vintage condition with minor wear consistent with age and use. Marked “925” as shown.