The Longitude at the Eve of the Third...
Geneva, Hotel Des Bergues, Oct 23, 1999
LOT 285
Dubey & Schaldenbrand, Index Mobile, 1960's.Fine and unusual, yellow gold plated and stainless steel, gentleman's wristwatch with round button split-second chronograph, register, tachometer and telemeter.
CHF 1,800 - 2,200
Sold: CHF 1,610
C. three body, polished, bicolour, overhanging teardrop lugs. D. two-tone silver with painted gold Arabic numerals, auxiliary seconds and 30 minutes register dials, outer tachometer and telemeter graduations, at the centre, visible hairspring. "Flèche" yellow gold hands. M. 13''', rhodium plated, 17 jewels, lever escapement, monometallic balance, shock-absorber, self-compensating flat balance-spring.Signed on the dial.Diam. 37 mm.
| Grading System | |
|---|---|
Grade: AA |
Very good |
Case: 3 |
Good |
Movement: * 3 |
|
Dial: 2 - 01 |
Notes
The system Index Mobile was patented in 1948 by Georges Dubey and René Schaldenbrand. It is a simplified sweep-hand construction, in which the two chronograph indicators are linked by a hairspring visible on the dial. The sweep hand is stopped by the coaxial pusher on the winding-crown, but only as long as the finger holds the pusher down. Wheel released, the sweep hand springs to the position of the actual chronograph indicator.