ARA provided "20/20" with e-mails from its California supplier that purported to explain the guitars' provenance -- where and when they were signed.
But there appear to be problems with some of the supplier's claims.
For example, the supplier claimed Don Felder of the Eagles signed guitars at appearances at two California book stores in 2008. But "20/20" spoke with store managers who say they were there during the appearances. They said they do not recall Don Felder signing any guitars. In fact, they said he specifically asked them to announce in advance he would not sign memorabilia, only books.
As for the signatures of the other band members, Eagles spokesman Larry Solters told "20/20": "In reviewing the available information, we do not believe that these guitars were personally signed by members of the Eagles."
Led Zeppelin guitar great Jimmy Page told "20/20" through an attorney for the band, George Fearon, that his supposed signature on one Led Zeppelin guitar shown on the ARA Web site was a forgery. The supplier had claimed to ARA that the band's bass player, John Paul Jones, signed the Led Zeppelin guitars in Asheville, N.C., on December 11, 2007.
But according to the band's attorney, Jones said he wasn't even in Asheville on that date. The supplier also claimed that Jones signed some of the guitars at the Mondrian Hotel in Los Angeles on February 10, 2008. But, again according to the band attorney, Jones says, not only was he not at the Mondrian on that date, he's never been to that hotel.
Barry Stevens had already lost faith in his Led Zeppelin autographed guitar. He returned it to ARA in exchange for a painting signed by Tiger Woods.
But he still has a guitar-size hole in his collection ... and he's almost ready to go guitar shopping again.