If you happen to be in London this week, I’d urge you to visit the British Museum. A treasure of 5,200 coins found by a man named Paul Coleman has just gone on display there. Mr. Coleman isn’t a coin collector exactly. He’s a hobbyist who found the coins last year with his metal detector in Lenborough, a small town north of London. The coins were buried in a lead container, probably in the 11th century. They are made of silver and show images of two kings named Ethelred II and Canute. Read more: