Lovely vintage US Navy sweetheart locket pendant in yellow gold fill on sterling silver. Pretty heart shape, with the USN symbol on mother of pearl front. Inside are two open compartments for photos or other keepsakes. It's marked along the edge of the right compartment "20 12K on Sterling" -- I think it probably said "1/20 12K..." originally but part of it wore off. Beautiful vintage condition with some tarnish and some wear on the finish of the USN symbol, not terribly noticeable. Locket measures 3/4" x 3/4" excluding the loop at top -- it's all ready to be hung on your chain. Very pretty.