Uhrenfabrik Lorenz Furtwängler Söhne, Furtwangen, Movement No. 20, Height 1420 mm, circa 1919 A precision regulator with regulator dial and Riefler pendulum No. 2212, DRP 100870 Case: walnut. Dial: silvered. Movm.: rectangular-shaped brass movement, Graham escapement with adjustable steel pallets with inlaid sapphires, invar steel pendulum "type K", pendulum spring suspension. Lorenz Furtwängler established his clock factory in Furtwangen in 1836; after 1868 the company traded as "Lorenz Furtwängler Söhne" - his sons Theophil, Hektor, Oskar and Adolf were also clockmakers. A limited company from 1900 on, Furtwängler advertised as makers of house and parlour clocks as well as table and wall clocks. They were known as makers of high-value clocks, which the quality movement as well as the Riefler pendulum of this clock are testament to; the pendulum comes with its original extra weights in a Riefler box. That this type of precision pendulum clock was not a one-off piece is shown by the Riefler sales records dating from May 20, 1919: Three more of the high-quality pendulums of type "K" were sold together with pendulum no. 2212 and sent from Nesselwang to the Black Forest. The company got into trouble during World War I and eventually closed in 1932 during the world economic crisis. Case: very good. Dial: very good. Movm.: very good, capable of running, cleaning recommended.