B67-349 SMOOTHING PLANE. Challenge. The Challenge Plane was patented by Arthur Goldsborough, manufactured by Ivor Johnson and sold by Tower & Lyon. This is the 9" smoothing plane version that has the word "Challenge" and Goldsborough's patent dates cast into the yoke. Wood and metal both worn but with no significant damage, black paint about 50%. From the collection of Harold Unruh. Good+ 1500-3000