Acetate disk by the Quarrymen (1958)
With "That'll Be the Day" on one side and "In Spite of All the Danger" on the other, this disk is worth an estimated $180,000 to $200,000. But it's in Paul McCartney's private collection, so don't expect it to be sold. The sole result of the group's first recording session remained in the hands of pianist John Duff Lowe until he sold it to McCartney in 1981. Two Quarrymen, Lowe and drummer Colin Hanton, left the group, but McCartney, George Harrison and John Lennon found fame as the Beatles. McCartney had the songs on the disk digitally remastered and copies pressed for friends. Each of those records is worth $20,000 [source: BeatlesSource.com].