The art is from the first authorized paperback edition of The Lord of the Rings, released by Ballantine in 1965. Artist Barbara Remington famously had not read any of Tolkein’s books before completing the project; she had only heard accounts from friends. The end result befuddled and irritated Tolkien, but became hugely popular with his young fans—and most everyone attracted to mind-altering substances.
Remington’s bright canvas came in a poster version as well, seen below. The demarcations separating the individual covers are obvious.
(Poster puzzle images via eBay)
2 Warps to Neptune 
I have the “combined” poster as well as the “Remington box” I’m not sure where I put what I call the “single” poster. The Remington poster is not in great shape but, only around the edges. As for the books themselves, my “Trilogy” is much like the one in the black box with the dust covers. The rest of Christopher Tolkien’s edited books, are all in their first American editions. I actually slowed down when they published “Beowulf.” I think I still have some of the Hildebrandt Brothers calendars floating around. I remember marking a black box over the date Tolkien passed over to the Grey Havens.