"Weight: 11.9g Dimensions: 1\" round, 18\" chain Hallmarks: Makers mark L & M Although these lockets were patented in the year 1902, this particular locket states on its backside that it is from the 'class of '12' dating it to a decade later. This is a very unique locket in that it has 3 windows and folds like an accordion. All bezels are present and the two clear windows inside the front and back covers are still present. The locket measures 1\" round and comes on an 18\" GF chain. Very lig Antique Medallion Locket Necklace Stamped 14k, Victorian Round Locket Necklace Stamped 14k, Vintage 14k Gold Locket Necklace, Vintage 14k Gold Locket Necklace Stamped 14k, Victorian Engraved Yellow Gold Locket Necklace, Antique Hallmarked Locket Necklace For Anniversary, Hallmarked Antique Gold Locket Necklace, Antique Engraved Yellow Gold Locket Necklace, Hallmarked Yellow Gold Vintage Locket Necklace