B68-511 CORRUGATED SOLE SMOOTHING PLANE. Sandusky Tool Co. No. 3SC. Part of the line of "semi-steel" bench planes manufactured by Sandusky in the 1920s and based on Schwer's 1928 patent for a simplified adjustment mechanism. 9" corrugated sole, 2" cutter, stained maple tote and knob with wear but no damage, metal clean. Another historical dead end from the otherwise respected Sandusky company. From the collection of Harold Unruh. Good+ 100-200