Is the safety reversed? Flip it to the right to fire instead of to the left? Is the bolt body in the white instead of blued or parkerized? Bolt numbered to the receiver? In '24 National Match '03s started being made without the grasping knob... I believe that went until '29. The 1925 star gauged barrel may be original to the receiver... another National Match part.
You may have a very desirable rifle. I hope that it hasn't been Bubba'd.
