10,925 CHF
Adolph Lange, Dresden, No. 8906, circa 1870.Very fine and rare 18K gold keyless A1 grade po-cket watch with special patented winding/setting system. White enamel, radial Roman numerals, outer minute track, subsidiary sunk seconds. Blued steel "spade" hands. Notes The watch employs a very rare winding/setting system, in which, in order to set the watch the back cover has to be opened, releasing a lever which engages the setting gears. There is only one other system known like this; it is Jürgensen's bow setting, in which also one needs to open the cover to set the watch. The case of the present watch is engraved "Patented May 5th 1866". This system is the only one known which uses the same precaution as Jürgensen. It remains to see who was the first, Langor Jürgensen, to invent the security system in which the cover has to be opened to set the watch. Jürgensen patented his system on Jan 15, 1867.
Auctioneer:
Antiquorum
Date:
2002-11-16
