Old large industrial accordion wall lamp

Beautiful accordion workshop lamp in metal. 1950s. Moves left to right on the wall mounting axis. Possible articulation of the arm and reflector. In very good overall condition. I believe it is a Swiss lamp (BELMAG?). Fully restored. Sanded. Electrical system completely renewed. Black braided fabric cord. Large screw socket (E27 bulb). Switch on the socket. This lamp can be mounted anywhere with visible wiring. Mounting height: 37 cm. Shade diameter: 16.5 cm. Shade height: 19 cm. Folded length: 43 cm. Unfolded length: 110 cm. Cord length: 2.5 m. Weight: 1.6 kg. Table lamp, articulated lamp, desk lamp, wall light, pendant, ceiling light, vintage, garage, portable lamp, opaline, Clichy glass, industrial lamp, accordion lamp, zip-zag lamp. Fresnel lens, Arlus, CREMER, KAISER IDELL, JUMO, GRAS RAVEL CLAMART, JIELDE HOLOPHANE, SANFIL, Solere, KANDEM, COL DE CYGNE, WORKSHOP FACTORY, INDUSTRIAL, MAZDA, MIDGARD, Perriand, Le Corbusier, Singer, Hala, Luxo, Bauhaus, Schaco, Super Chrome, WALL LIGHTS, ART DECO LIGHTS, FACTORY LAMP, SCONCES, DESK LAMP, FACTORY SCISSOR LAMP.