US Model 1917 "Knuckle-Duster" Trench Knife

This was the United States' first attempt at a trench warfare style fighting knife. There were equipped with a triangular "bayonet-style" blade and were considered somewhat fragile. The grips were wood and the knuckle-guards were either of the stamped steel "flanged" or "knobbed" styles (two variants are shown above); there were several variants. This knife was replaced by the US Mark 1 "Knuckle-Duster" Trench Knife.

There were two scabbard styles - leather sheath or leather with steel throat and drag.

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