1964 Breitling Navitimer Pilots Chronograph Ref 806 in Stainless Steel with Venus Caliber 178This Watch In the early 1950s, Breitling collaborated with the AOPA (Aircraft Owners and Pilots Association) in order to make the slide rule of its Chronomat even more relevant to pilots. The end result, the Navitimer, was a well known watch and is now highly collectable. The very first examples came with an all black dial, but eventually the sub registers became white to increase the white and black dial and make them more visible. Extra Points This