B65-330 BLOCK PLANE. PET No. 171. Unusual design with a short sole, almost a bullnose, and grooves cast in sides for better grip. Cutter is marked "PET No. 171 Patent Applied For." These show up occasionally (see PTAMPIA II, Figure 160), but the manufacturer and patentee (if any) are unknown. Japanning 80%, cutter mark faint but legible. Good+ 100-200