B66-546 STANLEY MODEL SHOP PROTOTYPE. Chisel-Edge Plane. An early prototype for what became the No. 97 chisel-edge plane. Unlike the production model, it is designed like a bench plane with the standard Bailey-type frog, including a solid adjustment nut with the two patent dates (but without Bailey's name). The 2-3/8" cutter has a Type A mark on the underside, probably borrowed from a No. 6 or 7 and flipped over to bed it bevel up, and the cap iron is just a small metal insert to engage the depth adjustment, similar to a No. 9 or No. 11. The angle is significantly steeper than on the actual No. 97. It's in near mint condition, with fully intact japanning and a couple of tiny chips from the tote. Unmarked but with certificate of authenticity. From the collection of Paul van Pernis. Fine 5000-10000