This Martin acoustic guitar from 1979 is a professional-level instrument with a 12-string configuration and a dreadnought body type. The body material is rosewood, and the neck material is mahogany with an ebony fretboard. The guitar has 14 frets and a brown body colour. It is a 4/4 size and right-handed. The model is D-28 12, and it is part of the Dreadnought series from Martin Guitars. Made in America, this guitar is a high-quality addition to any musician's collection.