Good condition original WWI theater made trench fighting knife that was converted from a French Mle 1866 Chassepot bayonet by shortening the blade and removing the hooked quillon. 8 3/8” blade has original bright finish with some brown and gray patina and has been sharpened. Guard has mostly brown patina. Brass grip has nice mellow patina. Lock button and leaf spring function fine. Fitted in original leather sheath that is supple with some wear and has tight stitching and rivets. Complete with handle straps that have working snap. A nice WWI trench knife for your collection.