Possibly a Rene Mathieu or Guariche diabolo scissor lamp for Lunel , the dented hole are seen in both of their creation .The name diabolo come from The diabolo (/diːˈæbəloʊ/  a juggling or circus prop consisting of an axle (British English: bobbin) and two cups (hourglass/egg timer shaped) or discs derived from the Chinese yo-yo. This object is spun using a string attached to two hand sticks ("batons" or "wands").
Rewired with a US socket , there is a space if you want to add a wall switch .There is several buterfly nut to adjust the arm.
Fully extended 34 , globe L.9 v D5.5