Vintage black metal counterbalanced halogen desk lamp, 1980-1990

Halogen desk lamp with counterweight in satin black lacquered metal. Italian manufacture of the years 80-90. Very good condition. Note a tiny jump of chrome at the level of the ball joint carrying the lampshade (see photos and zoom). The total length of the lamp is 84 cm. The height varies according to the inclination of the arm. The diameter of the circular base is 17 cm. The switch is located on the base. The halogen bulb is supplied