Brian Epstein's copy of his management contract with The Beatles, a pact that proved to be worth millions, is being offered for sale in London next month. The four-page document, signed by John Lennon, George Harrison, Paul McCartney, and Ringo Starr in 1962, carries an estimated $480,000 pricetag. McCartney and Harrison's fathers also signed because their sons were underage. (More Beatles stories.)