The seller offers little background to it, expect to say that the light is Danish and probably 1960s. What we do know is that the fitting has three glass opaline shades, all mounted onto a teak support, with a copper cover also on the globes.
It looks stunning and compared to the George Nelson reissues you can buy in a similar style, much cheaper too. This one is at £208.08, which sounds like good value. More images and details on the listing.