Bonhams, London, UK. 6th June 2019. George Harrison’s Futurama electric guitar, c 1958, on display at Bonhams Entertainment Memorabilia sale preview Knightsbridge for sale on 12th June. Estimate £200,000-300,000. This historically important guitar comes in its original case (pictured) embellished with Hamburg stickers, has never been seen on the market before; it has impeccable provenance and is extremely well-documented. Credit: Malcolm Park/Alamy Live News.