A guitar taken from the Beatles final ever performance at Liverpool’s Cavern Club is preparing to be sold at Auction. The guitar, which was played by George Harrison, was used during the band’s the iconic venue which took place in 1963. The guitar itself is a Maton Mastersound MS-500, Australian made instrument which auctioneers expect to sell for upwards of $500,000. Keep in mind, Harrison's first electric guitar sold last May for $430,000 after an initial estimate of $300,000.