I have been trying to sell my 1971 Gibson SG for a couple of months. Is it please possible to tell me the approximate value you guys think my guitar is worth? I see those listed for around 5000$ on eBay, but they don't seem to sell. It's 100% original (except for a brass nut). I just paid over 150$ to have the guitar professionally adjusted: fret leveling, intonation, pickups, bridge, neck, ... Everything is in top shape. This is one of the sweetest sounding SG I have played. I have a generation 2 Gibson Protector ''Chainsaw'' case I am including with it. Your help would be really appreciated.