Your Krag had to have been taken apart for some of that 'update' work.

Springfield Armory likely put your current 'updated/refurbished' stock on your rifle.
But, it is not likely that your current stock is the original 'wood' on your rifle.

IMHO - your cartouche date is kind of irrelevant.

Of special interest to me is Knute's rear-sight. It appears it could be the 'high-hump' early version of the model 1896 sight. Also shown is the more common 'low hump' leaf-hinge.

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