B66-618 ADJUSTABLE SASH PLANE. Schaefer & Cobb. Screw arm type, both bodies fully boxed, boxwood nuts and arms. Some minor chips in threads, tight crack in front nut. Bodies and wedge have overall moderate wear but no major damage. A mark, Schafer & Cobb made and sold tools in Cincinnati, Ohio, from 1853 to 1855. Good 60-120