53-18-142. This round frame features thinly cut acetate sandwiched around gold-plated titanium hit with enamel on the bridge. The temples are gold plated titanium with laser etched buffalo horn insets executed for the first time by one of the world's finest facilities. 100% pure titanium plated in 12k silver or 18k gold combined with Japanese cotton-based acetate temple tips and hidden spring hinge. 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.