This my 1977 copy of Silmarillion. First American Edition, first printing. It has the “Father Giles of Ham” typo; should be “Farmer” not “Father”. On page 229, the right margin between lines 27-32 are slightly cut off.

This is the American Non-first edition/printing of JRR Tolkien’s “Silmarillion.” The dust jacket has easy marks to determine — inner front jacket does not have a price; back of the jacket does not have ISBN numbers. While the copyright page states “American First Edition” and printing runs, one must check the back panel of the hardcover for indention mark. In this instance, if it has a “star”, then we know it’s not first printing. Finally, there are no broken (cut off) text on the right margin of page 229; 1st/1st edition shows broken text on that page.

And thou, Melkor, shalt see that no theme may be played that hath not its uttermost source in me, nor can any alter the music in my despite. For he that attempteth this shall prove but mine instrument in the devising of things more wonderful, which he himself hath not imagined.
The Silmarillion, JRR Tolkien, p. 17