Not seen this design before, but the 1970s Guzzini chrome spiral desk light is a real gem.
It is labelled Guzzini (should you be in any doubt) and is said to date from the '70s. The design uses a chrome spiral for the frame, with a bulb sitting on the top and a cord with on/off switch coming out of the chrome base.
According to the seller, there is 'light surface oxidation' on the inside, but overall, this 35cm-tall light has been 'cleaned and polished with a lot of care'.
The price is £92.66 on a 'Buy It Now'.