Very cool vintage hardcover! 

Tarzan and the Ant Men - Copyright 1924 - by Edgar Rice Burroughs. Published by Grosset & Dunlap (Likely 1950s copy)

Considering all the travels this book must have had, it is in great condition! 

Details on some of the issues here: 

Missing dust jacket
Bumped corners on cover
Some wear and tear on the cover
Foxing on edge of pages and within (Shown)
A previous owner wrote in pen on the second page in (Shown) 
Some creasing on some of the inside pages
Paper along spine crease on back page starting to pull away

This is the actual book you will be getting, so make sure to take a good look at the photos, I have done my best to show it realistically so there are no surprises.