Lunarnaut was a tie-in product from UK newspaper the Daily Express, and the resources in it are so good they deserbed a page of their own. Particularly prescient is the lunar bootprint produced on the back cover of the pack, predicting Aldrin’s own famous photograph a few months later. The postmarked is unclear on my copy, but I have seen others postmarked May 1969.
Click the images for pdf versions, some of which will have more pages than are visible here. Happy browsing.