This cane was owned by George Washington. It measures about 46.5″, and is inscribed on the top, “Bequeathed by Genl. Washington to Robert Washington of Chotanck.” It is made of wood and gold. For source and more details, click here.
Image from: http://www.cr.nps.gov/museum/exhibits/revwar/image_gal/morrimg/canegw.html