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Auktionen Dr. Crott 91st Auction

206 Langerhans à Crefeld, Height 1920 mm, circa 1790  A very fine, important, extremely decorative precision pendulum regulator with equation of time, date indicator and 30 days power reserve in a remarkable case attributed to David Roentgen Case: birch burlwood veneered on oak, upright rectangular case, profiled, applied ornament panels to the sides, brass strips, tapered front door with glazed pendulum aperture, profiled upper part with drum-shaped clock on a cuboid base, flanked by two leaf gilded figures: on the left is Geometry, a personalised allegory of the seven liberal arts, holding an isosceles triangle and a pen; on the right is a putto holding a flower garland. Gilt brass bezel with bead decor and domed glass over the dial. Dial: enamel, radial Roman hours, signed, window for date, blued snake-shaped steel hand for the centre seconds, blued snake-shaped steel hand for the minutes, gilt and pierced hand for the mean solar time, gilt and pierced hand for the hours. Movm.: rectangular brass full plate movement, signed, solid circular movement pillars, pin wheel escapement, weight winding via pulley, knife edge suspension, rare and heavy gridiron pendulum with 4 brass rods and 4 steel rods, adjusting device for pendulum, temperature indicator, heavy brass pendulum bob. Hermann Chr. Langerhans (1754-1839), born in Bendorf on the Rhine, was a member of the famous Neuwieder clock manufacture. He was taught the craft of clock making by Peter Kinzing (1745-1816) and produced among other things outstanding astronomical clocks. By collaborating with the cabinetmakers Abraham (1711-1793) and David (1743-1807) Roentgen the clocks from Neuwied became famous throughout Europe; today they can be found in major collections worldwide. Langerhans worked as a watchmaker in Krefeld and according to Nemnich, he built music boxes of various kinds and outstanding astronomical clocks. In fact, a musical clock in a Roentgen case made by him has been preserved. It was owned by the Cologne municipal museum. In addition, there is an equation clock of Langerhans in a private collection, comparable with the precision pendulum clock, which Roentgen gave to the city of Leipzig in 1797. Source: fowler-kinzingeinfluesse, as of 04/03/2015. Langerhans à Crefeld — 極精緻,意義深遠,極富裝飾藝術風格的 精密鐘擺壁鐘,附均時差,日期顯示,非凡錶殼內的30天動力儲 存顯示,是David Roentgen的加持款 40952  C: 2 D: 2 M: 2, 41  70.000 - 100.000 EUR 77.000 - 110.100 USD 630.000 - 900.000 HKD