Aside from perlage on the bridges, and blued screws, the rotor is the impressive part here. Designed in the shape of an airplane propeller, the three “blades” are made with metal from a Bristol Blenheim, a Hawker Hurricane, and a Supermarine Spitfire, all of which flew during World War II. The wood inlay at the center of the rotor was derived from an RAF biplane from World War I, the S.E.5a. All of these components were salvaged during restoration of these planes and, remarkably, all four of the planes are still flying today.