Old Double-sided Brillié clock of French industrial station or factory

Authentic double-sided industrial clock, found in a factory in velay (43), usually installed in factories or train stations, produced by the renowned french brand brillié. It is a daughter clock that depended on a single centralized clock that gave the same time throughout the factory. It cannot operate independently unless a battery-powered electronic module is installed. This product can be found commercially, on the net or with a watchmaker. Diameter 33.5 cm, thickness 16 cm, weight 4.160 kg.