No.4 mk.1 T.. it is a curiosity to me for a couple of reasons.. to begin with it is a 1943 rifle with an odd serial number A17190. It is also marked M47C, TR. There is no T marking next to the ejector screw, ...
In the pic you have shown of the left side of the action there is definately a T, its very light though, perhaps the camera flash has shown it up btter than the naked eye??