Gino Sarfatti, Model 205 Wall Light, designed 1955 and manufactured by Arteluce, Italy.
This rare model is illustrated in the Sarfatti catalogue raisonée.
Constructed from an opaline glass diffuser which slots into a black lacquered metal shade, mounded on a brass arm and backplate with push button, which offers 4 light settings: Off / White On / Black On / Both On.
This ingenious design allows the lamp to be rotated through 180 degrees, so it can be used vertically as an uplighter / downlighter and horizontally to provide light to each side.
The shades together measure 34cm long, 10cm diameter.
In good used condition.