Sold at Auction: 1918 L.F.& C. Brass Knuckle Trench Knife
Brass Knuckle Dagger, US 1918 - Metal sheath (15 cm) - DragonSports.eu
can you punch with a knuckle knife the same way you are supposed to punch with brass knuckles, how did the boys use these in the trenches? : r/martialarts
Carl Herring - US M1918 Mark 1 Brass Knuckle Knife