The one I have is a 43. I don't think it was ever issued. My uncle worked in stores at that time so likely just claimed it. I remember him telling my father that it was a sniper. Years later I looked for the mark T but when it was not there, figured it was just a story. A few years ago stripped down the rifle and found this T on the bottom of the receiver. Thanks for your input and I envy the rifle you have. Is rather rare.