B58-559 IRON PLOW PLANE. The Boss. In the final version of his improved version of the Phillips patent plow, Matthias Mayo replaced the original pinstriping with a coat of gold paint, cast the four letters of his name into the heads of the locking screws, and cast "The Boss Plane" in the side. Very clean, gold paint 80%, rosewood tote and fence fine, crisp casting on the screw heads. No cutters. One of the truly iconic patented plow planes. Fine 1500-3000