51-19-140. Large rectangular shaped frame with a small keyhole detail. Made with 100% pure titanium plated in 12k silver, 18k gold, or 24k gold combined with matching titanium temples and a hidden spring hinge. This unisex thin-silhouetted profile is complemented with hits of enamel on the corners and bridge. The temple flaunts a subtle gold-plated and enameled plaque. Polarized CR-39 sun lens with a hydrophobic coating and a proprietary 12 layer anti-reflective UGR12™ coating, 99.9% distortion free, carry 100% UVA/UVB protection, block eye-fatiguing blue light, and are coated with Diamond Cast™ anti-scratch coating Individually numbered and handmade in Japan from the world’s finest artisanal craftsmen.