Hilt form: slender one-piece turned wood grip very gently contoured to hand. A slotted tang nut is recessed at pommel end. Ornate plate steel crosspiece.
Blade form: identical to that for the French version of the US Mark I trench knife, 1918, see WEA 648, - double-edged tapered blade with prominent medial rib and long, high-shouldered ricasso.
First World War period unofficial weapon. The engraved motto on blade is translated as 'The avenger of 1870' (a reference to France's humiliation at German hands in the Franco-Prussian War).
Reference: Stephens, Frederick J, 1985, Fighting Knives, Arms and Armour, London, p 27 (ref 95)