Otto Kolb, adjustable table lamp published by Kolb & Associates circa 1950.
Brass and red Bakelite.
The lamp is adjustable in height : you just need to move the red sphere along the stem.
It can aslo be mounted as a wall lamp with the ring on the base.
A bump on the shade.
Chips on the Bakelite.
Light signs of oxidation, essentially on the stem where the Bakelite sphere has stayed.