That’s a valid point. And the more some of the comments are considered the more difficult, indeed impossible, it surely is to verify any “autograph”. Even if it signed ” I certify this is my true autograph” – how do we know that in itself is not a forgery? Many, many years ago Bob Monkhouse, who was a friend of our neighbours’ came to visit and kindly signed my autograph book. Years later I came across an autograph book in a second hand bookshop containing his autograph. Except that it wasn’t or was very different from the one he signed for me…..