

Abraham-Louis Breguet was the first to discover the principles of 'resonance'. Breguet's resonance watches introduced two independent movements within the same case and in so doing, Breguet was able to demonstrate that the balances became regulated by the 'resonance' phenomenon, oscillating exactly in step with one other. Rather than using two movements, the present watch uses a single train but with twin guillaume balances, escape wheels and differential gearing - the differential wheel distributes the power from the train to the two escapements.
According to research conducted at the time of the watch's sale at Antiquorum in 1998, which included interviews with Albert Piguet himself, the movement was originally placed in a glazed nickel case of the type usually prepared for observatory contests or exhibition purposes. In the 1970s, the movement was finally cased in gold so that it might be sold.
An exceptional watchmaker, following the completion of his studies at the École d'Horlogerie, Albert Piguet was offered a job at the specialist chronograph manufacturer Lemania. He is perhaps best known for his development of the Lemania calibre CH27 C12 in 1946. At that time, Omega and Lemania were both part of the SSIH and the calibre would later become the legendary Omega calibre 321 as used in the Omega Speedmaster - the first watch on the moon. Albert Piguet developed a number of calibres for Lemania and was the firm's technical director between 1948 and 1980.