The Wonderful Story of Henry Sugar
This is probably my favorite Roald Dahl short story. I realized Calvin had never read it so I gave it to him over the summer to read. He really liked it too.
One of the earlier stories in the book is the mostly true story of the Mildenhall Treasure. So then when you get to the Henry Sugar story its presentation also seems like maybe it also is a true story. Or as a kid I guess you just wish it was a true story because it is so good.