Breitling COSMONAUT Navitimer Chronomatic 1809 Vintage Pilots Chronograph Cal 11

£5,245.00

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

Breitling COSMONAUT Navitimer Chronomatic 1809 Vintage Pilots Chronograph Cal 11

Full Spec