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Breitling COSMONAUT Navitimer Chronomatic 1809 Vintage Pilots Chronograph Cal 11

£5,245.00Price
Vintage Superb Condition 
 
BREITLING 
1809 
COSMONAUT NAVITIMER 
 
24 Hour Dial 
Rare Early 
Buren, Breitling and Heuer
module Dubois-Depraz 8510 on modified Buren 1281
  • Full Spec

    Vintage Superb Condition 
     
    BREITLING 
    1809 
    COSMONAUT NAVITIMER 
     
    24 Hour Dial 
    Rare Early 
    Buren, Breitling and Heuer
    module Dubois-Depraz 8510 on modified Buren 1281
     
    The Case 
    A Real Iconic Navitimer 1809 Case 
    A 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 15.5mm 
     
    ALL ORIGINAL Case 
    Original case crown pushers etc the full lot 
     
    The Bezel 
    Again classic and ingenious bezel calculator slide system 
    Internal rotating bezel 
    External bezel grip 
     
    The Dial
    And now for something a little different! 
     
    What sets the Cosmonaut aside is that superb 24h tritium dial 
    Like 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 dial 
     
    Reverse Panda silver white sub-dials and outer slide rule scale 
    Date aperture at 6.
     
    Again Dial is ALL ORIGINAL not a touch of lume a hand replaced again ALL ORIGINAL  
     
     
    The Band 
    As 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 clasp 
    Again ingenious and unique 
     
    The Movement 
    The Caliber 11
     
    Arguably one the first automatic chronograph movements 
     
    Project 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. 

     

    Remarks
    1969-
    joint development of Hamilton-Buren, Breitling and Heuer
    module Dubois-Depraz 8510 on Buren 1281
    crown at 9h
    micro rotor
    double excenter regulator for curb pins and stud carrier
     
    Features
    automatic chronograph, 60s, 30min, 12h, cam switched
    date: set by changing 21-24h
    17 jewels
    f = 21600 A/h
    power reserve 42h