Original U.S. WWI Model 1918 Mark I Trench Knife by AU LION with Steel Scabbard Category_Water Jacket Assembly to which the General answered

to which the General answered quite briefly

The knife is in excellent gently used condition

This rifle most likely suffered a broken stock around 1889-1890

and the barrel extension are marked with 4136

and all barrel banes are U stamped

Original U.S. WWI Model 1918 Mark I Trench Knife by AU LION with Steel Scabbard Category_Water Jacket Assembly to which the General answeredOriginal Item: Only One Available. The U. S. Model 1918 Mark I Trench Knife was the second major "Knuckle Knife" to be officially adopted and issued to the US military. It was developed for use in the horrific trench warfare that typified the stalemate on the Western Front during the latter part of World War One and saw use not only there, but during World War Two as well. The knife was manufactured in the United States by Henry Disston & Sons (H. D.