No laughing at the back, the Lesbo table lamp by Angelo Mangiarotti is a very serious and very cool piece of 1960s design.
Designed for (and reissued by) Artemide back in 1967, it has a body and diffuser made from blown smoked Murano glass, with a base in polished metal, combining to produce a lamp that positively glows.
Your for £593 – and that doesn't include the required incandescent opal bulb.