I've been working on guitars for 40 years. If you are not sure what I'm talking about let someone else buy this. Martin B-stock neck and B stock body. Body was meant to be hand scalloped koa backed probably $5,000 dollar guitar. Might have had blemishes. It is signed by the person who scalloped the braces. I did not like the Koa back and replaced it with an Amazon Rosewood back. Youll see the sides are still Koa. Attached is a martin neck. It is glued in and I have a bolt in there too, for security. Plays and sounds beautiful