This William H. Messenger Knuckle Knife ia an unmarked specimen. The 7 7⁄8” bright blade is made of Ketos steel which was used in anti-aircraft shells and was a special high carbon, high chrome steel that was very hard to work with. Some call it an early stainless steel formulation. Knuckle knife has a brass guard and knucks with a brown Bakelite handle. The scabbard was again made by August Ziegler in Jackson, MI. This knife also appears in my article in Knife World, May, 1992 and is the knife shown in Cole’s Book IV p.165.