M3100 Eyeglasses by Matsuda. Color: Antique Gold/Dark Brown, Black / Matte Gold, Brushed Gold/Matte Black, Palladium White/Matte Black, Size: 47-23-145. Take a look at the Matsuda M3100 - a celebration of history and masterful design. The lightweight titanium frame is coated with precious metal and adorned with the brand's own M+N motif, offering the perfect combination of strength and style. Meticulously crafted by Japanese artisans, this bold design features hand-applied lacquer that adds distinctive character and showcases the intricate engraving of the pressed titanium rims.