This Krag is actually a model 1896 rifle that has been 'cut-down'.

Springfield did not make a 24 inch barrel. The barrel is shortened from 30".

Model 1896 is stamped deeply so it is easily mistaken for '1898'. The model 1896 and 1898 actions are different. This is most noticeable at the 'notch' for the root of the bolt-handle.

The rear-sight is a 1901 rifle sight. The 1901 carbine sight graduations go up to 5 (500yds) on the base and 23 (2300yds) on the leaf. The forward sight screw is missing.

The stock is a shortened rifle stock.

The front-sight has been re-cycled and nicely re-mounted on the shortened barrel.

This altered Krag would make a nice shooter, but, is only worth about $275 to $300. (In my experience, such altered Krags are difficult to sell).