B66-652 TURNTABLE PLANE. Foster Patent. Super rare example of Edwin Foster's 1909 patent for a bench plane with a frog that can be rotated up to 45 degrees to either side. The whole story is in PTAMPIA I, page 218. 9-3/4" sole with No. 101 cast behind the knob and the patent date cast behind the frog, 2" Ohio Tool Co. globe cutter. Beech tote and knob stained to resemble rosewood with wear, particularly on the rear edge of the tote. Metal very clean, japanning 95%. One of the holy grails for collectors of weird and ultimately doomed patented planes. Good+ 1500-3000