This is a lot of 3 3-in-1 paperback books in the Robotech series by Jack McKinney: The Sentinels, First Generation, Second Generation.
The Sentinels is the rare Omnibus containing the stories: #1 The Devil's Hand, #2 Dark Powers, #3 Death Dance. It is in good condition with light edgewear, very light spine creasing, some rubbing/scuffing on the covers, and clean, tight pages. There is also some tanning due to aging inside the covers.
The First Generation contains #4 Battlehymn, #5 Force of Arms, #6 Doomsday. The Second Generation contains #7 Southern Cross, #8 Metal Fire, #9 The Final Nightmare. Both books have more wear and are in acceptable reading condition. There is moderate edgewear, moderate spine creasing, some small creases on the covers, some scuffing/rubbing on the covers, and clean, tight pages.
The First Generation has a sales sticker over the upc code on the back cover.
The Second Generation also has a slant to the spine.
The picture is a scan of the actual books you will receive.
ISBN #s: 0345389018, 0345391454, 0345391845
9780345389015, 9780345391452, 9780345391841