My condolences.
Please reduce the size of your pictures. Big pictures take a long time to load for a member on dial up.
As mentioned, your rifle is in pristine condition. Absolutely safe to shoot. There's a S/N thing with '03's but your Mk I is way above the cut off.
A Pedersen Device if you can find one will run you in 6 figures at least. snicker.
Looks like this.
http://www.rockislandauction.com/vie...id/52/lid/3653
Rummage around here.
http://m1903.com/