Description Product Description I was born in '61, in '63 to "SG" Gibson SG named for. To Narrow Neck & 14 degrees head angle specification from '65 or later, 66 around the change and the adoption of a small head to the large pickguard, it becomes mahogany three-piece neck in '68, there is no non-volute and the "i" dots in '69 various specifications changes have been made in just eight years and Gibson logo.