B66-665 JOINTER. Challenge Plane. Patented by Arthur Goldsborough in 1883 and 1884, and distributed by Tower & Lyon. Unlike the shorter versions which have the word "Challenge" cast into the yoke, this one has "Challenge" and the patent dates cast into the body by the toe. All Challenge planes are very rare, and PTAMPIA concludes that there was only one production run before T&L gave up on them as a bad idea. Unlike the shorter versions, the tote has a small horn at the top that's been smoothed over, and is held by two bolts that look like replacements. Lever cap and cutter have light pitting, japanning 95%. From the collection of Harold Unruh. Good+ 400-800