This Los Castillo vintage Mexican silver necklace bares the design #637, the eagle and proper hallmarks. It measures 15.5in. long with a width of a bit over .75in. It weighs 106.1 grams. The rivets attest to its quality. The condition is perfect. The hand applied beads and texture to the silver work create a dramatic effect that looks as good with a suit as it does with jeans. Wow, LOOK AT THAT NECKLACE!