I was looking at a row of Martins at Carter Vintage and saw one the didn't look right. It was blond back and sides. Checked the tag. Said Martin J65M. I never heard or seen on before. I is a narrow waisted jumbo shape. I picked it up and noticed it has a fairly flat shaped neck. It feels like a Gibson in your arms. It sounds like a morph between Martin and Gibson tone, bright yet full. Not a great bluegrass instrument more Americana in feel. It mine now. Oh my...