The Longitude at the Eve of the Third...
Geneva, Hotel Des Bergues, Oct 23, 1999
LOT 250
Breguet, Type XX, No. 631, 1960's.Fine, water-resistant, stainless steel aviator's wristwatch with retour en vol round button chronograph and register with steel bezel.
CHF 8,000 - 10,000
C. three body, polished, screwed case back, graduated revolving bezel, dust protecting cap. D. black with radium-coated Arabic numerals, auxiliary seconds and 45 minutes register dials. "Bâton" radium-coated hands. M. 14''', rhodium plated, 17 jewels, lever escapement, monometallic balance, shock-absorber, self-compensating Breguet balance-spring.Signed on the dial, numbered on the case.Diam. 38 mm.
| Grading System | |
|---|---|
Grade: AA |
Very good |
Case: 4 - 12 |
|
Movement: * 4 - 6 |
|
Dial: 4 - 6 - 01 |
Notes
The title retour en vol refers to the instantaneous fly-back feature of the chronograph work. A single push on the lower chronograph button, zero's the chronograph hand whilst still in motion, which then restarts immediatly, avoiding the need for a pilot to break concentration from the controls of the plane.