Lamp "Patented United Lumina"

Hello, I am separating a "Patented United Lumina" light (about 1950) with 2 telescopic arms, it is a lamp of manufacture (it comes from a wood machine) it's metal. everything is original except the wiring that is now standard. It is more rare because it doesn't have the transformer that is present on newer models, the switch is on the top of the shade. Nice patina but without damage.