I was looking at Deagol's article on "The First Impression of
The Return of the King"

http://www.tolkienbooks.net/php/1st-rotk.php

and then compared it with my Readers Union The Return of the King.

My copy has some slipped text on Page 49 but no signature mark '4' at the bottom of the page.

Does anyone have a 6th Impression GA&U The Return of the King which I think is the same printing and can compare with the Readers Union edition to see if page 49 is the same in both versions?