B68-533 JACK PLANE. Knowles Type. Good early example. Unmarked, but very similar to PTAMPIA II, Figure 6, but with the tote screwed directly to the bed rather than in a socket as in the original Knowles patent. 15-1/4" sole, 2" cutter, birch tote, wedge and knob. Tip of tote rounded. Wood has light wear, metal oxidized but no rust or pitting. From the collection of Harold Unruh. Good+ 200-400