'Flintstone' - Photos of your Krag's (22 inch barrel) front-sight and muzzle crown, as well as, your rear-sight, will allow us to tell you more.

All I can tell you now is that #210582 is a model 1898 Krag, made as a rifle around June, 1899, with a well-worn finish, stock crack in the wrist, and nice 1902 'cartouche'.