I might be off my rocker here... but to me, something looks odd about that serial number.  The rest of the receiver markings are clear in the picture, but the serial is not...  Also, the alignment of the serial number is not aligned with the remainder of the stampings (i.e. slightly lower than "Model 1898.  Springfield Armory").  I have never seen a Krag where the alignment and clarity of the stampings was inconsistent... do they exist?  It just looks strange to me, but I'm certainly no expert...