Not overly exciting but happy to pick up so I can add it to my my M1928 Haversack that I have on a full mannaquin.
M1910 US entrenching shovel. Stamped US on handle and shovel. Welded front hilt to blade. Pre-1917 versions often did not have hilts on the back. This weakness I've read was corrected by time the AEF arrived in France by 1917.
The cover is a repo (or so I think) but the shovel is in excellent shape.
No maker mark, date or paint which is typical of pre WWII versions. So no real way to date this but probably interwar period (but they were used during WWII)