From a 1930s catalogue inherited from the original design team, this rimless frame uses a double-flex strap construction based on the style used in American vintage at the time, in which a board is inserted between the end piece and the lens.Focus on frontal view design, the front part that holds the lens is designed to be integrated with the holding part that supports it from the side, without using screws. The material is pure titanium, which allows for more precise fitting of the temples.The engraving by craftsman is strongly engraved from the side of the end piece to the temple.