55-20-140. The round, aviator-shaped lenses are available with a thin inset acetate ring to compliment the metal rim-wire. Named after the modern pioneer in Architecture and Textile design, Charles Francis Annesley Voysey. 100% pure titanium plated in 12k, 18k or 24k gold combined with Japanese cotton-based acetate temple tips and a hidden hinge. Optional 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.