Record Collector magazine reckons that an original first pressing of a track by the band that preceded the Beatles - The Quarry - is he most valuable record of all time. Even though it cost about 90 pence to make, the first pressing of 'That'll Be The Day' featuring John Lennon and George Harrison and other bandmates Colin Hanton and John Duff Lowe, which is owned by Mr McCartney, is now said to be worth £100,000.
Magazine Record Collector's editor Jack Kane told reporters: "The main factor in the price is not, as you might think, scarcity, it is actually desirability. We base the prices on information from dealers, collectors and experts who have their ears to the ground. That said, eBay has confused things - you can sell exactly the same thing a few days apart and there can be a variation of price of up to 500 per cent."