It is the newest. The newest twenties lack the dark circle behind the head of Jackson that the older version had. If you look at a screen cap of the writing on the front (you can find it by clicking the link above and then moving forwad one picture) you will see there is no circle on this one, so it is newer.

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"Not all who wander are lost." - J. R. R. Tolkien

"You cannot live a perfect day without doing something for someone who will never be able to repay you." - John Wooden