I have to get my camera in better shape to take some more pics, but i have a strong feeling this is a contract acquisition do to the stamp I forget where I read it but Englandicon did make some small contracts of these rifles. The SN is located in front of the sear on the receiver left side. Then only the bolt handle neck like unto the Number 4s. Definitely an Enigma this one, I appreciate all the help and insight from all, i think we're getting close to truth, tho i would put my money on a military contract to a third world ally to her first owner, she does have the out of service arrows on her so it looks like she was released for purchase after a war.