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No.
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59
Lot No. 59
92nd
Estimate  55,000 - 70,000 €
This is a lot of a former auction!

Clemens Riefler, München, No. 591, Type A3, Invar pendulum type J No. 3431, DRP 100870, Height 1530 mm

, circa 1944

Astronomical precision regulator with gravity escapement, electrical winding system, seconds contact device and aneroid with still originally packed spare pendulum type K No. 3630 and original adjusting weights - sold on 9 October 1944 to Häußler, Augsburg, Germany, with extensive digital documentation of correspondence and rating certificates


Case: oak, glazed front door, top lateral glazed, regulation scale. Dial: silvered, signed, radial Arabic 0-23 hour indicator at "6",, Arabic seconds at "12", control window for electrical winding system, blued spade hands. Movm.: rectangular-shaped brass movement, solid movement pillars, invar steel pendulum "type J", knife edge suspension with adjusting nut, mechanical adjusting device.

Clemens Riefler (1820-1876)
In 1841 Clemens Riefler founded a factory that produced ruling pens; at the time these drawing instruments were considered the finest compasses in the world. Later the company started producing precision pendulum clocks and soon Riefler ' s clocks were used in observatories all over the world as well as in research institutes that were in need of exact time measuring. The Riefler company created the most accurate mechanical clock in the world. Clemens Riefler died in 1876 and his son Sigmund and his two brothers Adolf and Theodor took over the business; Sigmund devoted himself to new developments of compasses and precision pendulum clocks.
#41354
Case: very good
Dial: very good, slightly oxydized
Movm.: very good, capable of running, cleaning recommended


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