Until they cough up a solid provenance or evidence all they have is a good story. I hear stories like this all the time when people offer me Mark Twain's electric razor or his palm pilot, and they always come with a terrific story and all kinds of "expert" verifications, but when I ask for the actual documents (not the stories about the evidence or documents) they never seem to materialize. Show me that label (which sounds a bit odd from the get-go). Show me contemporary documented evidence (from the Twain side, not the Hancock family legend based on great Aunt Matilda Hancock's attestation that she saw a guy with white white hair and whiskers hand it over to her daddy in a Fresno California bar in 1909). And show me a reasonable chain of evidence showing this is that very same guitar. I have over a 150 volumes from Twain's library, a bunch of silverware he gave his daughters, a fan he and his family autographed and kept as a souvenir from their time in Germany, and a bunch of other things with rock solid provenance or documentation. But I also have an 1868 fountain pen, an inkwell, a pipe, and a pair of gold-rim glasses that have about the same claim to fame as that guitar (at this point). Today on ebay I saw a flint arrowhead signed by Geronimo in felt-tip pen and a piece of cloth signed by Lincoln in deliriously bright blue ink and given to a slave in Richmond, Virginia after the Civil War was over. These items had expert authentication and came with wonderful stories (the seller ebay seller is "93_and_selling" --check out his current and previous auctions for more goodies, including a "signed" Twain). Now, I'm not saying it ain't Twain's guitar... Kevin Mac Donnell Austin TX