Lampada da scrivania modello 900 di Maison Jumo, anni '70

Table lamp by JUMO, model 900.
Sometimes called a "saucer", this lamp is chrome-plated. Its base and deflector are mounted on a ball-and-socket joint, offering great flexibility of adjustment.
Its two-tone black and white shade can be rotated 360°. 
The black metal base is cast-iron weighted inside, with its original, fully functional switch and cable. 
A bayonet bulb provides soft, subdued light.

Period: 20th Century
Circa: 1973
Dimensions: Height of shade in vertical position: 72cm
                      Shade and pole height flat : 55cm
                      Deflector diameter: 21cm 
                      Deflector height : 7cm
                      Foot diameter: 18cm
                      Chrome-plated mast height with ball joints: 47cm

JUMO (a contraction of the first two letters of the 3 designers Yves JUjeau and Pierre et André MOunique) was founded in 1940. 
It produced luminaires inspired by Art Deco.
At the end of the 70s (around 1977/78), JUMO was bought out by the English lighting company Concord, and became JUMO-CONORD until 1991. 

JUMO made a name for itself with its workshop lamps. The aim was to equip French industry with models that were resistant, directional and adaptable to a variety of functions. 

If there's one thing that can be said for these lamps, it's sturdiness! 
Nearly sixty years later, these models are often in excellent condition and still work very well.

The JUMO brand also produced less industrial and more decorative models. In fact, some models are mistakenly attributed to Eilleen Gray or Charlotte Perriand... 
Although neither of these two emblematic figures of design worked for JUMO, we do know that Charlotte Perriand selected JUMO models for the Musée des Arts Décoratifs exhibition "Le Bazar" in 1949 (source "Le mobilier industriel" by Brigitte DURIEUX and the blog "autrefois la lumière").