This spectacular upgrade — done by Martin — takes the Brazilian rosewood back and sides from a 1959 D-28 and adds a new sunburst premium grade Adirondack spruce top and a 14-fret T-bar reinforced mahogany neck. Exquisite appointments include flame maple binding, gold engraved Waverly tuners, and abalone herringbone top purfling (including soundhole, base of fingerboard, plus backstrip) with additional abalone purfling all around. This truly unique instrument is in excellent+ condition.