 Two early copies of "The Last Supper" are known to exist, presumed to be work by Leonardo's assistants.The copies are almost the size of the original, and have survived with a wealth of original detail still intact.One, by Giampietrino, is in the collection of the Royal Academy of Arts, London, and the other, by Cesare da Sesto, is installed at the Church of St. Ambrogio in Ponte Capriasca, Switzerland.