The watchmaking House definitively leaves the hands of the Breguet family in 1870, a couple of months before the Franco-German war and the fall of the Second French Empire. This political instability has a direct effect on the Parisian business and Breguet is disheartened to observe sales falling. We have to wait until 1900-1914 and the Belle Epoque to reverse this downturn and to see again an evolution of the demand.