Martin D-35 Seth Avett Custom Signature Edition Construction: mahogany blocks/Dovetail neck joint, Body size: D 14-fret, Top: High-altitude Swiss spruce Rosette: Style 28 - fine herringbone center ring, Top bracing pattern: standard "X", Top braces: solid Adirondack spruce 1/4" Back material: solid East Indian rosewood - 3-piece with flamed koa wedge wood, Back purfling: style 35 Side material: solid East Indian rosewood, Endpiece: grained ivoroid, Fingerboard position inlays: custom Avett Copper Snowflake design Bridge & end pins: white with tortoise dots - end pin jack with chrome cap, Pickguard: Delmar black, Electronics: Martin Gold Plus Natural 1