Description Product Description Perhaps the most revered vintage Martin D-28s are the ones created in 1937 with forward shifted hand-scalloped X-bracing, Adirondack red spruce soundboard and a 1 3/4" neck width. This stunning new recreation is based on a 1937 museum guitar, with original specifications that were confirmed using X-ray technology. Constructed using hide glue, this guitar features an Adirondack spruce top, Madagascar rosewood back and sides and authentic 1937 D-28 appointments, right down to the neck barrel, heel, diamond, head taper, and fingerboard inlays. The wider fingerboard is representative of a 1937 model. Aging toner is used on the entire body and neck to give it that authentic finish.