The movement is based on a design by Albert Helwig (1886-1974), the technical director of the Deutsche Uhrmacherschule, and Meyer?s professor, under whose direction he built his first tourbillon. Meyer employed a straight line lever escapement, for which he designed his own carriage. Tourbillons with straight-line lever escapements are exceptionally rare; the vast majority of tourbillons with lever escapements employ a lateral lever. This watch testifies to Meyer?s exceptional watchmaking skills. He used a special balance with outer lamina of gold and cut it far from the arm in an attempt to eliminate the centrifugal force error. It is likely that he also wanted to decrease Middle Temperature Error without employing a Guillaume balance. He made the escapement free-sprung and employed two pins for adjustment between horizontal and vertical positions, an idea also used by Richard Daners. The execution of the watch is outstanding: the balance screw holes for the mean time adjustment are slotted, giving them spring-loaded properties and allowing for secure holding of the screws, the steel parts are very well polished, all arbors are jeweled with diamond endstone on the balance, and gold wheels are employed for the train. Helfried Meyer was born in 1926 in Steinbeck/Luhe. In 1980 he built his first flying tourbillon based on the designs of Karl Geitz and Juergen Kuhls. In 1983 August Spetzler, who in the 1950s designed the so-called ?Volks Tourbillon?, asked Meyer to make one to these specifications, which was a combination of Spetzler No. 28 and the so-called ?Hitler tourbillon?, (D.U.S. No. 27) which the Glashütte Uhrmacher Schule made for Hitler in 1931/1932. Subsequently, Meyer made a few others based on the same principle. We thank Julius Velan for his assistance with Meyer?s biographical information.