The legendary guitar Bob Dylan played when he shocked fans by going electric at the 1965 Newport Folk Festival has been recovered, PBS reports, although the singer himself isn't so sure. The sunburst Fender Stratocaster that changed the face of rock and roll has been sitting in an attic for almost 50 years, it seems.

Next Tuesday on PBS' History Detectives, the daughter of a pilot who flew Dylan to concerts in the mid-1960s will appear with what she claims is the same instrument he used at Newport, according to The Associated Press. But one of Bob Dylan's lawyers said the singer still has the guitar in his possession. If it's the real thing, experts speculate the six-string could fetch up to $500,000 at auction.

On Wednesday night representatives from the show told The AP they stood by their claim that Dawn Peterson had the right guitar. Newser reports that Peterson's father tried to give the guitar back to Dylan's representatives after it came into his possession but no one ever picked it up.

The famous moment was the first time the then up-and-coming folk singer appeared at a concert playing an electric guitar and backed by a full band.

The ensuing years saw Dylan touring the world playing concerts that mixed acoustic and electric sounds. Oftentimes, the latter half of the concerts would be met with vicious boos, during which Dylan would turn his back on the audience.

Orin Snyder, an attorney for the singer, claimed that Dylan did not fly to Newport Folk Festival. In fact, he drove and since the finding has come to light Snyder said that if the Peterson family thinks the guitar is Dylan's then they should return it to him.

He did own several other Stratocaster guitars that were stolen from him around that time, as were some handwritten lyrics, Snyder said. In addition, Bob recalls driving to the Newport Folk Festival along with two of his friends, not flying.

Peterson allegedly has no plans to return the guitar.

The episode of History Detectives premieres Tuesday night.