Provenance The back of the painting.Click to enlarge The painting was for sale at Christie’s auction house, London, in the late 1920s, as painted by Titian.Click to enlarge Partial inscription/mark, about 5 cm (2 in) in width, located in the lower left corner of the painting. It resembles a horizontal oval and it has some partial vertical lines. It looks as if it has been partially removed in a previous conservation treatment. Click to enlarge Roman emperor Domitian, Leonardo da Vinci, Titian, Tizian, Tiziano Vecellio, Roman emperors, Eleven Caesars, Undici Cesari, Domitianus, Isabella d’Este, Federico II Gonzaga, Mantova, Mantua, Italy, Francis I, Amboise France, Charles I England.