Sigma Model SD18 - Solid Spruce Top Acoustic Dreadnought Size Guitar Solid grade A Sitka Spruce top, Mahogany back and sides, Mahogany neck Hand finished scalloped bracing system, bone nut and saddle Rosewood veneered headstock facia, Rosewood fingerboard and bridge D'Addario EXP strings Inspected and shop adjusted in St. Louis