B66-544 STANLEY MODEL SHOP PROTOTYPE. Chamfer Plane. An early prototype of what would become the Stanley No. 72. It has a longer sole than the production model (10-3/8") and the sliding nosepiece is locked with a knob mounted on the cheek, which left room for a standard Bailey-type blade adjustment on the frog, with a recessed type M adjustment nut with patent dates. Cheeks are machined rather than japanned with a scale engraved on the left cheek, adjustable throat locked by front knob. J mark on cutter, rosewood tote. Model Shop No. 344 on toe. A unique piece of Stanley history, in immaculate condition. From the collection of Paul van Pernis. Fine 5000-10000