Here to remind you why you fell in love with C.F.Martin in the first place, this Custom Shop guitar was commissioned by Rainbow Music to be the same specifications as the Authentic line of guitars but with a modern style adjustable neck. This guitar is constructed the old way - with hide glue throughout, and historically-accurate pre-war detailing. Based on a 1930’s 000-28 this guitar features Guatemalan rosewood back and sides, an Adirondack spruce top, hide glue,thin nitrocellulose lacquer finish and authentic series appointments, right down to the neck barrel, heel, diamond, head taper, and slots.