Vintage AO American Optical Super Armorplate sunglass lens, medium green Calobar shade, 50mm round, made in USA circa 1964. Premium optical glass designed for sunglass or safety eyewear replacement. Lens is unused new old stock (NOS), very clean with original AO branding and faint logo, showing no major wear or scratches. Includes original protective envelope. Collectible for vintage eyewear restorers, opticians, or mid-century accessories collectors. Rare replacement part in outstanding preserved condition.
