French modernist lamp made in the 1950's , by Jean Louis Domecq , you can also Google it to find several example on other dealer's sites. It is the original design , other extension can be added to extend the arms using the same principle. The particularity of the connection is the direct contact inside which does not required wires so it can be manipulated in any shape or form desired , all the moving part possibly moving at a 180 % angle . This one has a long arm  which had an industrial use .It can be use as a floor lamp a reading lamp near a couch) .It has been stripped to the metal which bring an interesting patina . The name came from his initial J. L. D , searching for a reliable and practical lamp to equip the machines in his workshop, Jean-Louis Domecq designed and constructed his own creative version .It is mounted on a 10 pound weight lifting plate 
H.53 x 10 Arm x Globe D.6