Old workshop enameled sheet metal pendant light - raises and lowers

Incredible pendant light in dark green enameled sheet metal. It goes up and down as desired thanks to its mechanism contained in the metal ball. Industrial style, its small size indicates probable use in a workshop or specific workstation. Its conical shape and its switch give this pendant light an additional charm which we do not displease! Condition of use. Pretty good. No shock or breakage. Traces of rust without lack of paint (see photo). Electrification and rising and falling mechanism of origins. New ceiling light.