Last week I wrote about the core artists -- Duccio, brothers Ambrogio and Pietro Lorenzetti, and Simone Martini, not household names -- and how the curators develop core themes in Sienese art.
An ancient stone tablet inscribed with the Ten Commandments sold for over $5 million at a Sotheby's auction. The marble slab, dating from 300 to 800 A.D., is the only complete example of its kind. The ...