The Barton Perreira Chevalier 57 is a titanium aviator with a double bridge, shown here in Gold with Smokey Topaz gradient lenses. Handmade in Japan, it features filigree etching at the double bridge and signature Barton Perreira engraving at the temples.

The CR-39 lenses have an anti-reflective coating. This colourway measures 57mm across each lens, with a 15mm bridge and 145mm temples.

• Frame: Gold titanium
• Lens: Smokey Topaz (AR), CR-39
• Shape: aviator
• Measurements: 57-15-145
• Includes a case and cleaning cloth; lining and cloth design may vary