Do you still watch Antiques Roadshow? I know it was trendy a decade ago, but it's still on and recently they had a very cool item show up. A guy brought in a guitar that he got from John Lennon and George Harrison. Seems he was a session musician when he was younger and Harrison gifted the guitar to him because he could play it better than George. (It was fretless) Whether you want to believe he was better is beside the point and I'm sure Beatles fans just cursed when reading…however, the appraised value for it? $510,000! Do you have a gem hidden away somewhere that would get you serious cash?