A Wonderful Antique Gold Locket, Vintage Art Nouveau - Victorian Puffy Heart for Necklace, by Plainville Stock Co. of MA, circa 1900. This beautiful antique puffy heart locket is composed of 10K yellow gold. It has lovely Art Nouveau period detailing around the edge and a central heart design. It is marked P.S.Co. for the Palinville Stock Co. of Plainville MA, a leading jewelry company of the time founded in 1872. This piece dates circa 1900, Art Nouveau Period. Overall it measures about 1 inch long with bail by about 3/4 inch wide from side to side. It opens to reveal both of the original bezels for photos or keepsakes. This is from an estate collection and is in lovely vintage condition. A rare find.