Important Watches

Geneva, Mar 20, 2010

LOT 424

Navigational Stopwatch Breguet No. 2785, sold to "Marine Nationale Aeronautique Navale". Made in the 1950's. Fine and rare, chrome cased keyless navigational stopwatch with chronograph and 60-minute instantaneous register. Accompanied by the original fitted wooden deck box.

CHF 3,000 - 5,000

USD 2,800 - 4,500 / EUR 2,000 - 3,500

Sold: CHF 3,240

C. Three-body, chromed, "demi-bassine", with screweddown milled bezel and back, the back engraved: "Marine Nationale Aeronautique Navale ?0042-B, Breguet". D. Black painted, with white Arabic numerals, outer seconds and fifths of a second chronograph divisions, outer five-second Arabic numerals, subsidiary seconds and instantaneous 60-minute register. White painted poire hands. M. 18"' brushed nickel-plated, 18 jewels, straight-line lever escapement, monometallic balance, selfcompensating blued steel Breguet balance spring, index regulator, chronograph with visible work, co-axial button on the winding crown. Diam. 50 mm.


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Grading System
Grade: AA

Very good
Case: 3-9

Good

Scratched
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 2-01

Very good

HANDS Original

Notes

Navigational Stopwatches The navigational stopwatch was used in conjunction with the aircraft?s octant, an instrument similar to a ship?s sextant used to measure the angular elevation of a celestial body with respect to the horizontal plane when the navigator was making observations in order to determine the aircraft?s position. In an airplane, particularly at sea, quite often that which appears to be the horizon is not a true horizon but a false horizon due to the atmospheric conditions, such as strata of haze or clouds.