Vintage American Optical F-343
These vintage American Optical F-343 were often used in the 1960/70s by Swissair Pilots and Sportsmen as e.g. Jo Siffert, Ferdy Kübler and Hugo Koblet (Cycling legends with AO F-343).
The frames were produced in at least the silver and gold colorway with brown, green, grey and phototropic lens. These American Optical pictured here are high quality frames made in Canada.