Book of Knowledge Historical Chart (featuring Ethelred the Unready!)

Forgive me if I have already shown you this chart. I can't remember. It's from 1953, the year Elizabeth II was coronated, so I imagine it was issued to commemorate that event. This is 12.75 inches in diameter and in very good shape. It's a pretty big wheel!

This is mostly a list of dates. You can brush up for your English History exam with this. If anyone has any idea what that odd shape that holds the window is, leave a comment. It looks like someone's rear end to me.