7002-173. FIELD & HARDIE screw arm plow plane. A No. 239-1/2 plow manufactured by H. CHAPIN but marked by the Philadelphia hardware partnership of Field & Hardie. B mark, the name of the partnership itself is very worn and mostly illegible, but the "Market Street" and "Philadelphia" are clear, as is the "239-1/2." Beech with boxed fence and boxwood nuts, threads very clean, several user names. Dwights French cutter. Good+ 80-150