MARTIN 3K STYLE 3 KOA SOPRANO UKULELE & CASE Style 3 appointments include the parallel white stripes down the center of the fretboard, a sculpted point at the end of the fretboard with matching pointed inlay on the top below the bridge. - Figured koa back, sides and top, ivoroid body binding, ebony fretboard and bridge, abalone diamond & square position inlays. Molded case.