20170819_081325.jpg I personally attained these autographs so I know they are real. I don't have pure proof except for BB King20190328_141634.jpg20190328_141700.jpg. Chris Duarte is signed on the back of the headstock. I got all these in the early 90s and have some pretty good circumstantial evidence. I figure I will let someone else enjoy the guitar. How do I go about selling it and do I need coas? I would send everything I have to somebody who could help me with that. I salvaged the BB King signing out of a flood. I lost a lot of proof. The guitar is a 1991 American standard Stratocaster.