Important Collector's Wristwatches, P...

New York, Sep 25, 2003

LOT 265

Birch & Gaydon Ltd, 153 Fenchurch Street, London, "Mark II", Reversing Stop Watch for Equal Distance Bomb Sight, Height in Thousands of Feet, Ref. 176, Swiss. Produced in the 1940's.Fine and rare, stainless steel, military, single round button, back and forth "retrograde" chronograph.

C. three-body, brushed, lobed revolving bezel, wire lugs. D. white with painted Arabic numerals graduated from 0.5 to 14, the red hand on the outer graduation in fifth of a second can be set by turning the bezel. "Bâton" blued steel chronograph hand. M. Cal. 18 3/4 ''', gilt brass, 15 jewels, straight line lever escapement, monometallic balance, self-compensating Breguet balance-spring. The pusher at 11 is for stopping the chronograph hand, the co-axial pusher on the winding-crown is for startig the chronograph function back and forth and return to zero.Case numbered.Diam. 56 mm.