1950's Diabolo lamp designed by Rene Mathieu for Lunel, France.
Messing wall mounting with built-in switch, foldable two-part arm in brass with a perforated green lacquered aluminum shade, the inside is lacquered white.
The whole is in very nice condition, completely electrically checked and in perfectly working condition;
In the photos, a cord is connected to demonstrate proper operation, in principle it is connected directly from the wall to 220 volts and the cord is unnecessary.