Although not an avid guitar player, and by no means a connoisseur, I do have a soft spot for Gibson Les Paul's, and I saw this one for $561, that seemed odd on a number of counts.
Serial number, from what I gathered at one of those databases, points to a seventies guitar, 70/71/72. The headstock looks funky to me, front is black, back is green, neck is grey. Bit of a train wreck, no? Isn't that neck backplate also unusual? Don't remember ever seeing one in Gibsons.
Any thoughts about it?