Early Electric Clock w Stunning Cut Crystal Dome ca 1920 Antique French Bulle ^Sale

Impressive and legendary creation of French inventors and Swedish glass works cooperation from Art Deco epoque. Brass movement, hand cut crystal glass made by Costa Boda, Sweden, exclusively for Bulle.
Size app.: 38 cm high in total (15 in), 25 cm (9,84 in) wide and 18 cm (7,1 in) deep. Very good, not tested, little of age and usage wear, group of tiny chips at the rim of the dome (pic). Please study high-res pictures for cosmetic condition! Weight of app. 3,8 kg it is going to measure some 7 kg of volume packed for shipment.
The Inventors Bulle electric clocks were developed in France just prior to the Great War of 1914-1918. It was at time in the early 20th Century that there was a great deal of activity throughout Europe, the UK and USA in developing domestic clocks, which would operate on battery power. Two Frenchmen, working initially independently, on aspects of electric solenoids and clockwork mechanisms ultimately came together to create the Bulle clock. Professor Marcel Andre-Moulin gained a Science degree in 1904 and his Doctorate in Science in 1910. He became a lecturer in Chronometry at the Faculty of Science Bensancon and then was named Director of that Institute. By 1912 Andre-Moulin had developed the system of using a solenoid with a 3 pole tungsten magnet which, in 1914 he used to construct an electric clock. Maurice Favre-Bulle was born in Bensancon, into a family of clockmakers. He studied at l'Ecole d'Horolgerie de Bensancon from 1885 - 1888 before joining his brother in taking over and running the family clock factory Favre-Heinrich. During the Great War Favre-Bulle worked at the engineering laboratories of the Faculty of Sciences of Paris, developing military timers, watches, timing systems and telegraphy. At the end of the war Favre-Bulle joined with Marius Lavet to form La Societe Bulle et Cie, a company to develop prototype electric clocks. In 1920 a patent was taken out by Favre-Bulle for an electric clock. The patentees were Favre Bulle and Madame Veuve Andre-Moulin, the widow of Marcel Andre-Moulin. The commercial exploitation of this patent followed. In 1920 Compagnee Generale des Appareils Horo-Electrique was established to commence the commercial production of the Bulle clock. Over 100 different case designs were utilized.
NB! Arcuate magnet slowly loses its strength within decades and usually needs additional magnetization – this can be done by any enthusiast at home. Battery element of 1,5 - 3V should be placed in the middle of wooden base. There is already one!
Very rare!