A scarce example of the massive Bowie Knife-bayonet designed by Admiral John A. Dahlgren for the U.S. Navy Whitney Plymouth Rifle. Manufactured by Ames Manufacturing of Chicopee, Mass. The knife-bayonet features a 12 inch semi-spear point blade measuring 1/3" thick, dated 1861 on the right ricasso with heavy brass guard. Solid brass guard and hilt, with grooved walnut grip marked (roughly) "7034" on the left side. With sheath, unmarked black leather with brass tip, throat and frog stud.