Its in great condition for the age, looks like it's never been read. Light wear to box (see photos) and the spines of the books are slightly sun bleached (also see photos).
Maps are all intact as well. Hard to come across this set in such good shape.Covers are in a plastic protector (put on by previous owner) and it looks like they did use tape to secure cover to book. I've been told these are most likely book club editions from the 70's or 80's due to no price on book jacket.