did you ever remove liner from this helmet? This is real AT MK 2 or converted AT MK 1? Because I have helmet with the same eagle, but it's converted AT MK 1 to Mk 2. When I removed liner, from inside you can see riveted or welded two holes and between them drilled new one. from outside it is invisible. Pictures of that helmet are in Polish Para Helmet AT MK I/II . You post in that thread pictures of another your helmet.