This 1 inch Antique art deco GF U.S. Navy Submarine Warfare Dolphin Insignia Pendant Locket is a unique and original piece of vintage jewelry. Made with yellow gold filled metal, this round pendant features a locket style design, perfect for displaying a special message or photo. The dolphin insignia adds a touch of military history to this elegant and timeless piece. Ideal for those with a love for vintage accessories and military memorabilia.