M3104-A Eyeglasses by Matsuda. Color: Antique Gold, Brushed Gold, Palladium White, Size: 46-22-145. Step up your eyewear game with Matsuda's M3104-A, a hexagonal drill mount style that exhibits ingenuity and finesse. Precision-engineered from ultra-lightweight titanium, this modern take on a timeless rimless design features hand-engraved upper and lower temple accents crafted from flexible beta titanium. Expertly made in Japan, the M3104-A tastefully balances classic construction with innovative design.