The edition you're looking for is out of print. You can still get it second hand on amazon though, but it's 79dollar. The illustration is by Ted Nasmith. There is also a "blue version" which is still available new.

Here is an amazon link to your red edition:

https://www.amazon.com/SILMARILLION-Tolkien-J-R-45/dp/B009M92IVO

Blue edition:

https://www.amazon.com/Silmarillion-J-R-R-Tolkien/dp/0618391118/ref=mp_s_a_1_1?keywords=silmarillion+ted+nasmith&qid=1562185977&s=gateway&sprefix=Silmarillion+ted+&sr=8-1

Goodluck!