Elvis Presley's Hagstrom Viking II electric guitar, used during his 1968 Comeback Special, is set to be auctioned at Sotheby's. The Swedish-made semi-hollow-body instrument, which Presley used throughout the broadcast, is estimated to fetch between $1 and $2 million. The instrument became a symbol of Elvis' legendary comeback and marked a pivotal moment that reconnected him with fans and cemented his status as the King of Rock 'n' Roll. The auction comes just weeks after David Gilmour's Black Fender Stratocaster sold for a record-breaking $14,550,000.