Paul, can you see if the area on the receiver side wall that the front pad sits on has been kissed with a mill, in the usual fashion? The edge of the milling should be just barely visible following the contours of the body pad.
TBH there are one or two things that disquiet me a little. The pad screws have been hand filed to length. The edges of the pad are perfect, whereas the contours of the receiver show numerous minor dings & scratches consistent with normal use over a long life. H&H finished off the pad screws by bringing in a vertical milling cutter & just shaving off a few thou along the inner face of the receiver side wall (trimming the screw ends in the process). The milling marks are generally there to see on genuine T's. As a result of this minor milling there is also usually a tiny curve at the very front top edge of most real front body pads where they have been 'kissed' by the cutter at its forward-most point of travel. Maybe I'm missing it, but I can't see it here.