Folks who want to get their hands on a piece of technological history, might have their interest piqued at this news: Britain’s oldest working television, the 75-year-old Marconi type-702, will be going on sale at the Bonhams Mechanical Music and Scientific Instruments sale later this month. The 12″ TV works perfectly, with only 30% of its original parts replaced (with identical parts), so it’s practically a machine that’s been preserved throughout the years. It has a pre-sale value of £5,000 ($8,000) – more than enough for you to purchase a high-end 3D HDTV, but hey – if you’re already buying a TV that costs that much, it probably isn’t too heavy on your wallet in the first place. The Bonhams Mechanical Music and Scientific Instruments sale will be held at Knightsbridge, London on April 19.