For 700 Years, King Arthur Tale Has Been in Private Hands

A 700-year-old glimpse of Camelot is about to hit the auction block—with a price tag that could top $2.5 million. Christie's will sell the so-called Clermont-Tonnerre Grail in London on July 8, and it's expected to fetch between $2 million and $2.7 million. Created around 1290–1310, the...