Springfield Arsenal Prototype Knuckle Knife
This cast brass handle US Mark I Trench Knife is a Springfield Armory Prototype Knuckle knife that has a faceted, elongated skull crusher integral to the casting. The steel 1910 bolo blade is nickel plated. This specimen is exactly the same as the brass tool room knife that came out of Springfield Arsenal also. Reference is Adrian Van Dyk List #115, p. 8, #61.
