My wife happened to come across a book in her collection of "The Two Towers" from the Ballantine Books Inc.

We were kind of wondering how much it would be worth? After looking online for a bit, I've seen that it's the "dolphin edition" from the website http://tolkien.skwishmi.com/guide/pbset.html or the first one among the sets. It's not in the best of shapes, but I figured it's worth asking about.