This cutlass, made of steel, iron, and brass, and measuring about 23″, was owned by George Washington. It originally had two edges and was at some point, possibly after Washington used it, altered to have one the blades take on a saw tooth pattern. Washington would carry this when inspecting his troops. For source and more details, click here.
Image from: http://www.cr.nps.gov/museum/exhibits/revwar/image_gal/morrimg/cutlass.html