Breitling COSMONAUT Navitimer Chronomatic 1809 Vintage Pilots Chronograph Cal 11
£5,245.00Price
Vintage Superb ConditionBREITLING1809COSMONAUT NAVITIMER24 Hour DialRare EarlyBuren, Breitling and Heuermodule Dubois-Depraz 8510 on modified Buren 1281
Full Spec
Vintage Superb ConditionBREITLING1809COSMONAUT NAVITIMER24 Hour DialRare EarlyBuren, Breitling and Heuermodule Dubois-Depraz 8510 on modified Buren 1281The CaseA Real Iconic Navitimer 1809 CaseA Chunky 48mm diameter excluding crown and pushers 51mm inclusive 48mm lug to lug and 22mm lug spacing by no means a small watch but still reasonably slim at 15.5mmALL ORIGINAL CaseOriginal case crown pushers etc the full lotThe BezelAgain classic and ingenious bezel calculator slide systemInternal rotating bezelExternal bezel gripThe DialAnd now for something a little different!What sets the Cosmonaut aside is that superb 24h tritium dialLike any other pilots dial read aparatus of course the dial is designed to give maximum read clarity at a glance and in classic tool watch form this Breitling 1809 dial does this with the stark contrast of those tritium numerals and vivid orange hands on that stark matte black dialReverse Panda silver white sub-dials and outer slide rule scaleDate aperture at 6.Again Dial is ALL ORIGINAL not a touch of lume a hand replaced again ALL ORIGINALThe BandAs original as the rest of the watch and so is the strap, you see a lot of future "Avenger" type straps in this early design what you don't get on later straps is the unique mid click locking systems on this claspAgain ingenious and uniqueThe MovementThe Caliber 11Arguably one the first automatic chronograph movementsProject 99 resulted in the development of the Caliber 11 movement (referred to, with its successor models, as the “Chronomatic” movement). The Caliber 11 movement employed modular construction, mating Buren’s micro-rotor powered watch movement with a chronograph module developed by Dubois Depraz. Watches powered by the Chronomatic movements are easily recognized – the crown is on the left side of the watch, with the pushers in the usual positions on the right side. The Caliber 11 has its hour recorder at nine o’clock, its minute recorder at three o’clock, and a date window at six o’clock, with no running seconds register.The Caliber 11 movement uses 17 jewels and Incabloc shock-protection. The movement measures 13.75 ligne, with a diameter of 31mm and a height of 7.7mm. The frequency was 19,800 vibrations per hour, with a power reserve of 42 hours. In the Caliber 12 movement, the frequency was changed to 21,600 vibrations per hour; the Caliber 15 movement used a KIF shock protection system.Remarks1969-joint development of Hamilton-Buren, Breitling and Heuermodule Dubois-Depraz 8510 on Buren 1281crown at 9hmicro rotordouble excenter regulator for curb pins and stud carrierFeaturesautomatic chronograph, 60s, 30min, 12h, cam switcheddate: set by changing 21-24h17 jewelsf = 21600 A/hpower reserve 42h