A very interesting design – and this 1970s modernist-style chandelier isn't too expensive to pick up.
According to the seller, the fitting (one of three available) was fitted new in the late 70s, but was taken out of the building recently when it underwent a refit. Maybe they just wanted to save some money, as the fitting uses 22 bulbs, all 40w 'golf ball' lights. You'll need a high ceiling too, with the drop from top of the chrome to the bottom bulb is 84cm.
But it is a feature light, very of its era and at £160, cheaper than most reissued designer light fittings.