LONDON.- A rare Vox UL730 amplifier and cabinet used for the Beatles ‘Revolver’ and ‘Sgt. Pepper’ recording sessions will be one of the highlights of the Entertainment Memorabilia auction on Thursday 15th December 2011 at Bonhams, Knightsbridge, London. The amp, which has only recently been discovered to have been used by the Beatles, is estimated to sell for £50,000-70,000. Peter Hook of Joy Division and New Order borrowed the amp from the current vendor in February 2011, as his guitarist needed a vintage amp for a recording session at Blueprint Studios in Salford. It developed a fault at the end of the session and was taken to a specialist engineer to be fixed. When the amp chassis was removed from its case, the engineer noticed the name of ‘George Harrison’ scratched on the chassis. After further inspection he found a label on the inside of the speaker cabinet. Subsequent research led to