Ontario Antique Tools » The Tool Shoppe » Blades » Wm. MARPLES & SONS TOOTHING PLANE BLADE 1 7/8" Wm. MARPLES & SONS TOOTHING PLANE BLADE 1 7/8″ Wm. Marples & Sons 1 7/8" x 7 3/8" toothing iron. Sharp and ready to work. Shamrock trademark, Hibernia works , Sheffield. Updating...