A guitar once owned by Pink Floyd founder member Syd Barrett has sold at auction for almost £20,000. The 12-string Yamaha acoustic guitar fetched £19,920, almost double its pre-sale estimate of £5,000 to £10,000, with the proceeds split evenly between charities Mind and the Arthur Rank Hospice. It was bought by an online bidder based in France during the sale at Cheffins in Cambridge on Thursday. Barrett left Pink Floyd in 1968, as they were about to achieve worldwide recognition, and lived in the basement of his mother’s house in Hills Road in Cambridge. The singer died of pancreatic cancer in 2006 at the age of 60.