A 1950's Breitling AVI 765 co-pilot stainless steel wristwatch with chronograph function on a tapered water resistant black Tropic Sport strap . Serial number: 949011. Fitted with a Venus 178 with a 30 second chronograph function addition. The stainless steel watch is fitted with a faded black dial, faded Arabic numerals, cream hour, minute and second hands and three sub-dials for the chronograph function. The outer fixed stainless steel ribbed bezel with alternating Arabic numerals and batons, the reverse marked 'BREITLING 765 AVI SHOCK PROTECTED ANTIMAGNETIC STAINLESS STEEL WATERPROOF.'