The Siren Necklace The Siren is a one-of-a-kind vintage silvertone book chain paired with a striking 3.25" vintage Neiman Marcus whistle. The 25" chain creates an elegant mid-length drop with beautiful movement and undeniable presence. Substantial yet refined, this piece blends classic structure with bold character — an inspired heirloom meant to be worn with confidence. Wear it alone as a statement or layer it for a more collected, storied look. Details: • Vintage silvertone book chain • Vintage Neiman Marcus whistle (3.25") • 25" book chain length • Toggle clasp closure • One of a kind