That's not a lot to go on, but it is a U.S. Model 1898 Rifle, made around 1899/1900 (don't have my books at hand, but I know that 200722 is 1899) and what you have shown appears to be perfectly proper.

Value: $600-800 from what I see - that could go down (significantly) or up (a little) depending on what the rest of the gun looks like.

Bayonets, with scabbard, are around $150-$200, with slings around $100. The bayonets are dated, so you want one that matches - neither date is "rare", so that should not be a problem.

Check out (You need to Login to view media files and links) and search for "Krag". you'll get about 7 pages of stuff.

That is the Model 1902 sight, which is the same as that on my 200722.

Is there a little peep sight that swivels up, on the back of the eyepiece? Most M1902 sights have it - those without are a bit more desirable.

Almost any Krag rear sight is "correct" on an 1898 rifle - they went through a lot of changes and overhauls. The test is that the finish color and wear should match the rest of the rifle.

"Almost any Krag rear sight is "correct" on an 1898 rifle - they went through a lot of changes and overhauls."

It is a VERY long story, involving such things as a bitter political battle between two ordnance department officers, some unintentionally (due to weather!) overloaded ammunition, inability to manufacture replacemnts in a timely manner, and just plain choice and/or chance. In SOME cases it is possible to determine what sight SHOULD have been on the rifle as made, in others it is not so clear.

The collector attitude today seems to be that if the sight appears to match for color and wear, is fastened with un-buggered screws, has the proper matching handguard, and does not egregiously violate any of the known parameters, the rifle is "accepted" without $$$$ penalty.

I see nothing "wrong" with your gun. Supposedly, all rifles being put into 'final' storage, when rendered obsolete by the '03, had their sights changed (if not already so equipped) to either the M1901 or M1902 rear sight.