I've got a 1962 Precision, it's definitely authentic but it's had quite a bit of work done over the years including several neck replacements, various different bodies and a range of different electronics. For a while it was most of a 1969 Jazz, then later an excellent 1980 Stingray, and I believe it spent some time in the late 90s as a genuine Gibson Les Paul guitar, having had the neck, body and pickups replaced. As you can imagine, with that heritage it's extremely valuable.