One US issue M-7S engineers combst knife,with hammer ,nail claw, screwdriver tip,punch. A multi-tool,survival knife. Balde is marked IMPERIAL Made in USA M-7S. has a serrated blade, that will also act as a a saw. Basically an M-7 bayonet manufactured as an engineers multi tool or fighting knife. Overall very good condition, needs a cleaning, been in storage for about 30 years.