3,910 CHF
Dubey & Schaldenbrand, "Index Mobile", 1950's. Fine yellow gold and stainless steel gentleman's wristwatch with round button split-second chronograph, register and tachometer. massive, polished, teardrop lugs, gold case, stainless steel back. satined silver with applied gold indexes and Arabic numeral + auxiliary seconds and 30 minutes register dials, outer tachometer graduation. "Baton " gold hands. Notes Split second chronograph, Swiss patent No. 260791. Split second chronographs exist only with either a minute counter or with minute and hour counters. Georges Dubey and Rene Schaldenbrand of La Chaux-cle-Fonds, Switzerland, patented ( No. 260791) a simplified form of the split second chronograph, which had two stoppable chronograph hands, but they were visibly connected to each other by a fine coil spring. The split hand could be stopped only as long as the button in the crown was held clown; as soon it was released, the hand would immediately spring after the moving chronograph hand. In this system, only events of no more than 60 seconds duration could be timed. These double-hand chronographs have a minute counter in conjunction with the chronograph hands. Such chronographs were described and illustrated by Gerd-R. Lang and Reinhard Meis in "Chronograph Wristwatches to stop Time, Schiffer Publishing Ltd. pp 21,52,53 and illust rated p. 175.
Auctioneer:
Antiquorum
Date:
1997-10-18
