A Christie's employee shows a Gibson Kalamazoo guitar among others owned by Dire Straits singer, songwriter and guitar hero Mark Knopfler, that are up for auction at Christie's auction house in London, Thursday, Jan. 18, 2024. Some 120 guitars are on display ahead of the London auction on January 31, 2024. Mark Knopfler plans to donate no less than 25% of the total hammer price received, to be split equally between The British Red Cross Society, Brave Hearts of the North East and the Tusk Trust Limited. (AP Photo/Frank Augstein)