As the story goes, my father-in-law, a doughboy who served in France during World War I, brought the sword home when he was discharged from the Army. A Frenchwoman of his acquaintance gave him the sword, which she said belonged to her deceased husband. I hasten to add that Doughboy Joe was not married when he served in the war.
The hilt of the sword appears to be made of copper or brass, and the blade, which is 34" to 35" in length, is made of steel. The sheath is iron and is entirely covered with rust. The sword and sheath together are heavy and, no doubt, were quite a load when dangling on a belt from the ring of iron on the sheath.
On the blunt side of the blade is an engraved inscription which says as nearly as I can make out "Mre d'Armes de Chât (?) Xbre 1883 Cavrié légère MLé (?) 1822 - (?)1883". The serial number stamped on the handle of the sword is (? ?) A 20893.
I wish we knew a bit more about the sword. I Googled around and found no pictures of the exact same sword, only similar swords. The weapon appears to be an 1883 French cavalry sword, and it seems not to be a hidden treasure worth a bucket of money.
Update from: susan s. in the comments:
What you call the "handle" is also referred to as the "hilt". It is made up of the guard which is what is made of metal and the handle which appears to be wrapped in leather and stitched into ribs to keep it from slipping in the hand. (I learned all I know about these things on the American version of "Antique Road Show.")