The Observer – Every so often, a researcher or an art dealer or a historian pops out of the woodwork with a piece of art that they claim can be attributed to one of the most famous artists in the world. This week, Annalisa Di Maria, an Italian art historian, has come forward with a sketch that she believes to be an original, red-chalk drawing done by none other than Leonardo da Vinci, the Renaissance polymath responsible for the creation of the Mona Lisa. – read more
