Here's an interesting wheel produced during the "Aerospace Age"! It certainly has a lot more information than the usual solar system wheels you see around. This one was put out by the Air Force Aerospace Team. I don't know the year, though. I suspect someone with a knowledge of, say, Jupiter's moons could make an educated guess. Jupiter's known satellites far exceed the number noted on the wheel. And Neptune has way more than two!
This wheel is 7.5 inches square and is made of that cheap cardboard of the type that has that weird, cellophane-ish coating on top that tends to peel off. I love the typed Recruiting Service sticker. I wonder if R. Clay ever joined up?