$4,080
Jules Jürgensen keyless chronometer Jules Jürgensen, Copenhagen, No. 11243. Made circa 1880. Very fine, hunting-cased, keyless, 18K yellow gold pocket chronometer with pivoted detent escapement and Jürgensen's winding and hand-setting mechanism, patented on Jan. 15th, 1867. Four-body, bassine et filets, engine-turned cover and back, reeded band, hinged gold cuvette. White enamel with painted radial Roman numerals, outer minute track, large subsidiary seconds dial. Blued steel Breguet hands. Cal. 19’’’, maillechort, 20 jewels, Earnshaw-type chronometer escapement with pivoted detent, gold escape wheel, the detent pivot and escape wheel pivot with gold caps, cut bimetallic compensation balance with gold timing screws, blued steel Breguet balance spring, steel post to prevent excessive amplitudes, index regulator, wolf’s tooth winding wheels. Dial, case and movement signed. Diam. 50 mm. Thickness 15 mm.
Auctioneer:
Antiquorum
Date:
2010-03-10
