B63-654. BULLNOSE BLOCK PLANE. Thropp Patent. 3-3/4" sole and 1-1/4" cutter marked just "Warranted Steel." The lever cap is hooked onto a metal hook cast into the bed. It has "Patent 7855" cast into the lever cap, which was issued to John Thropp of Sheffield, and most examples were made by Wingfield & Rowbotham, a firm founded in 1751 and better known for its edge tools and cutlery. Japanning 75%, cutter and sole have some surface rust. From the collection of Cliff Sapienza. Good 150-300