I picked up this guitar today from a guy who claimed it to be a 60's/70's SG guitar. The neck has been broken, and it's been modified many times over and has a real thick coat of spray on it. The serial number is hardly visible, looks like it might be 78783 and the imprint is slightly crooked (just like my old melody maker). I don't see anything on here that leads me to believe that it's vintage other than the fretboard looking very similar to my 65 melody maker (brazilian rosewood), but I don't know what to look for. Anybody have any clue what I might have acquired? Here's a link to the pictures.