BREITLING REF. 765 AVI CHRONOGRAPH STEEL Breitling GenËve, "AVI," case No. 938295, Ref. 765. Made in the 1960s. Fine, antimagnetic, water-resistant, stainless steel Aviator's wristwatch with round button chronograph and registers. Three-body, polished and brushed, screwed-down case back, bidirectional revolving graduated steel bezel, lapidated lugs. Black with luminous Arabic numerals, subsidiary sunk guilloche dials for the seconds, the 15-minute register with luminous blocks at 3 minute intervals and 12-hour registers. Luminous white hands. Cal. 178, copper-colored, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating Breguet balance spring.