To be honest I don't think it adds to the value at all. Sure it's got some cool factor with the markings but with Savage 1899's and 99's the value is all in the condition on the pre-mil rifles and yours has been messed with. The D&T and heavy loss of original bluing devalues the gun a lot and puts it into a shooter grade class, not collector. The caliber will bring you some value but if it had been in any other caliber other than 250 it would be a $450 gun.