B-45
The B-45-12, a 12-string edition guitar introduced in 1961, was the first B-45 model guitar available and the first B series overall. The B-45-12 had a mahogany body and neck, spruce top, rosewood fingerboard, and a cherry sunburst finish, and was made with "round" shoulders for the 1961 – 1962 model year and "square" shoulders until the end of its production in 1979. Starting in 1963, the B-45-12-N was also available as a natural finish edition.
From 1991 – 1992, Gibson manufactured a reissue of the B-45-12 with rosewood sides and back.
Read more about this topic: Gibson B Series