The bayonet and sheath are correct for the U.S. Krag. It appears somebody polished the ever-lovin dickins out of that blade. It's also likely the numbers, if intact, would read "1898."
i think you're right. i blew up the the pic opposite the date, its stamped "USA" which is correct for the krag. also agree about the polishing. making it "pretty" took away any real value for it
just my 2c