Bakelite table lamp, model Sigma from the ’30s. Project: Christian Dell for Rondell Heinrich Römmler AG.
The original, signed, from the bottom visible coded manufacturer’s mark used in those times.
Adjustable lampshade and the inclination of the arm.
The whole in its original state was only cleaned.
The lamp is fully efficient, a small trace of use is visible on the lampshade –  most probably after its gluing.